diff --git a/src/pocketmine/level/Level.php b/src/pocketmine/level/Level.php
index 53297b9c2..14ef602a7 100644
--- a/src/pocketmine/level/Level.php
+++ b/src/pocketmine/level/Level.php
@@ -345,7 +345,7 @@ class Level implements ChunkManager, Metadatable{
 		/** @var LevelProvider $provider */
 
 		if(is_subclass_of($provider, LevelProvider::class, true)){
-			$this->provider = new $provider($this, $path);
+			$this->provider = new $provider($path);
 		}else{
 			throw new LevelException("Provider is not a subclass of LevelProvider");
 		}
@@ -1052,8 +1052,7 @@ class Level implements ChunkManager, Metadatable{
 	public function saveChunks(){
 		foreach($this->chunks as $chunk){
 			if($chunk->hasChanged() and $chunk->isGenerated()){
-				$this->provider->setChunk($chunk->getX(), $chunk->getZ(), $chunk);
-				$this->provider->saveChunk($chunk->getX(), $chunk->getZ());
+				$this->provider->saveChunk($chunk);
 				$chunk->setChanged(false);
 			}
 		}
@@ -2413,6 +2412,10 @@ class Level implements ChunkManager, Metadatable{
 		if($chunk === null){
 			return;
 		}
+
+		$chunk->setX($chunkX);
+		$chunk->setZ($chunkZ);
+
 		$chunkHash = Level::chunkHash($chunkX, $chunkZ);
 		$oldChunk = $this->getChunk($chunkX, $chunkZ, false);
 		if($unload and $oldChunk !== null){
@@ -2434,7 +2437,6 @@ class Level implements ChunkManager, Metadatable{
 			}
 		}
 
-		$this->provider->setChunk($chunkX, $chunkZ, $chunk);
 		$this->chunks[$chunkHash] = $chunk;
 
 		unset($this->blockCache[$chunkHash]);
@@ -2469,7 +2471,7 @@ class Level implements ChunkManager, Metadatable{
 	 * @return bool
 	 */
 	public function isChunkLoaded(int $x, int $z) : bool{
-		return isset($this->chunks[Level::chunkHash($x, $z)]) or $this->provider->isChunkLoaded($x, $z);
+		return isset($this->chunks[Level::chunkHash($x, $z)]);
 	}
 
 	/**
@@ -2552,7 +2554,7 @@ class Level implements ChunkManager, Metadatable{
 				}
 				$this->timings->syncChunkSendPrepareTimer->startTiming();
 
-				$chunk = $this->provider->getChunk($x, $z, false);
+				$chunk = $this->chunks[$index] ?? null;
 				if(!($chunk instanceof Chunk)){
 					throw new ChunkException("Invalid Chunk sent");
 				}
@@ -2692,7 +2694,12 @@ class Level implements ChunkManager, Metadatable{
 
 		$this->cancelUnloadChunkRequest($x, $z);
 
-		$chunk = $this->provider->getChunk($x, $z, $generate);
+		$this->timings->syncChunkLoadDataTimer->startTiming();
+
+		$chunk = $this->provider->loadChunk($x, $z, $generate);
+
+		$this->timings->syncChunkLoadDataTimer->stopTiming();
+
 		if($chunk === null){
 			if($generate){
 				throw new \InvalidStateException("Could not create new Chunk");
@@ -2762,28 +2769,27 @@ class Level implements ChunkManager, Metadatable{
 			$this->server->getPluginManager()->callEvent($ev = new ChunkUnloadEvent($this, $chunk));
 			if($ev->isCancelled()){
 				$this->timings->doChunkUnload->stopTiming();
+
 				return false;
 			}
-		}
 
-		try{
-			if($chunk !== null){
+			try{
 				if($trySave and $this->getAutoSave() and $chunk->isGenerated()){
 					if($chunk->hasChanged() or count($chunk->getTiles()) > 0 or count($chunk->getSavableEntities()) > 0){
-						$this->provider->setChunk($x, $z, $chunk);
-						$this->provider->saveChunk($x, $z);
+						$this->provider->saveChunk($chunk);
 					}
 				}
 
 				foreach($this->getChunkLoaders($x, $z) as $loader){
 					$loader->onChunkUnloaded($chunk);
 				}
+
+				$chunk->onUnload();
+			}catch(\Throwable $e){
+				$logger = $this->server->getLogger();
+				$logger->error($this->server->getLanguage()->translateString("pocketmine.level.chunkUnloadError", [$e->getMessage()]));
+				$logger->logException($e);
 			}
-			$this->provider->unloadChunk($x, $z, $safe);
-		}catch(\Throwable $e){
-			$logger = $this->server->getLogger();
-			$logger->error($this->server->getLanguage()->translateString("pocketmine.level.chunkUnloadError", [$e->getMessage()]));
-			$logger->logException($e);
 		}
 
 		unset($this->chunks[$chunkHash]);
@@ -3039,12 +3045,6 @@ class Level implements ChunkManager, Metadatable{
 			}
 		}
 
-		foreach($this->provider->getLoadedChunks() as $chunk){
-			if(!isset($this->chunks[Level::chunkHash($chunk->getX(), $chunk->getZ())])){
-				$this->provider->unloadChunk($chunk->getX(), $chunk->getZ(), false);
-			}
-		}
-
 		$this->provider->doGarbageCollection();
 
 		$this->timings->doChunkGC->stopTiming();
diff --git a/src/pocketmine/level/format/Chunk.php b/src/pocketmine/level/format/Chunk.php
index bef570be9..3336a341a 100644
--- a/src/pocketmine/level/format/Chunk.php
+++ b/src/pocketmine/level/format/Chunk.php
@@ -691,21 +691,9 @@ class Chunk{
 	}
 
 	/**
-	 * Unloads the chunk, closing entities and tiles.
-	 *
-	 * @param bool $safe Whether to check if there are still players using this chunk
-	 *
-	 * @return bool
+	 * Called when the chunk is unloaded, closing entities and tiles.
 	 */
-	public function unload(bool $safe = true) : bool{
-		if($safe){
-			foreach($this->getEntities() as $entity){
-				if($entity instanceof Player){
-					return false;
-				}
-			}
-		}
-
+	public function onUnload() : void{
 		foreach($this->getEntities() as $entity){
 			if($entity instanceof Player){
 				continue;
@@ -716,8 +704,6 @@ class Chunk{
 		foreach($this->getTiles() as $tile){
 			$tile->close();
 		}
-
-		return true;
 	}
 
 	/**
diff --git a/src/pocketmine/level/format/io/BaseLevelProvider.php b/src/pocketmine/level/format/io/BaseLevelProvider.php
index 24fc3e86b..3e04f0711 100644
--- a/src/pocketmine/level/format/io/BaseLevelProvider.php
+++ b/src/pocketmine/level/format/io/BaseLevelProvider.php
@@ -23,6 +23,7 @@ declare(strict_types=1);
 
 namespace pocketmine\level\format\io;
 
+use pocketmine\level\format\Chunk;
 use pocketmine\level\generator\Generator;
 use pocketmine\level\Level;
 use pocketmine\level\LevelException;
@@ -32,15 +33,12 @@ use pocketmine\nbt\tag\CompoundTag;
 use pocketmine\nbt\tag\StringTag;
 
 abstract class BaseLevelProvider implements LevelProvider{
-	/** @var Level */
-	protected $level;
 	/** @var string */
 	protected $path;
 	/** @var CompoundTag */
 	protected $levelData;
 
-	public function __construct(Level $level, string $path){
-		$this->level = $level;
+	public function __construct(string $path){
 		$this->path = $path;
 		if(!file_exists($this->path)){
 			mkdir($this->path, 0777, true);
@@ -67,14 +65,6 @@ abstract class BaseLevelProvider implements LevelProvider{
 		return $this->path;
 	}
 
-	public function getServer(){
-		return $this->level->getServer();
-	}
-
-	public function getLevel() : Level{
-		return $this->level;
-	}
-
 	public function getName() : string{
 		return $this->levelData->getString("LevelName");
 	}
@@ -124,4 +114,24 @@ abstract class BaseLevelProvider implements LevelProvider{
 		$buffer = $nbt->writeCompressed();
 		file_put_contents($this->getPath() . "level.dat", $buffer);
 	}
+
+	public function loadChunk(int $chunkX, int $chunkZ, bool $create = false) : ?Chunk{
+		$chunk = $this->readChunk($chunkX, $chunkZ);
+		if($chunk === null and $create){
+			$chunk = new Chunk($chunkX, $chunkZ);
+		}
+
+		return $chunk;
+	}
+
+	public function saveChunk(Chunk $chunk) : void{
+		if(!$chunk->isGenerated()){
+			throw new \InvalidStateException("Cannot save un-generated chunk");
+		}
+		$this->writeChunk($chunk);
+	}
+
+	abstract protected function readChunk(int $chunkX, int $chunkZ) : ?Chunk;
+
+	abstract protected function writeChunk(Chunk $chunk) : void;
 }
diff --git a/src/pocketmine/level/format/io/LevelProvider.php b/src/pocketmine/level/format/io/LevelProvider.php
index bdc3a75c4..c914084fc 100644
--- a/src/pocketmine/level/format/io/LevelProvider.php
+++ b/src/pocketmine/level/format/io/LevelProvider.php
@@ -24,16 +24,14 @@ declare(strict_types=1);
 namespace pocketmine\level\format\io;
 
 use pocketmine\level\format\Chunk;
-use pocketmine\level\Level;
 use pocketmine\math\Vector3;
 
 interface LevelProvider{
 
 	/**
-	 * @param Level  $level
 	 * @param string $path
 	 */
-	public function __construct(Level $level, string $path);
+	public function __construct(string $path);
 
 	/**
 	 * Returns the full provider name, like "anvil" or "mcregion", will be used to find the correct format.
@@ -88,77 +86,23 @@ interface LevelProvider{
 	public function getGeneratorOptions() : array;
 
 	/**
-	 * Gets the Chunk object
-	 * This method must be implemented by all the level formats.
+	 * Saves a chunk (usually to disk).
 	 *
-	 * @param int  $chunkX
-	 * @param int  $chunkZ
-	 * @param bool $create
-	 *
-	 * @return Chunk|null
-	 */
-	public function getChunk(int $chunkX, int $chunkZ, bool $create = false);
-
-	/**
-	 * @param int   $chunkX
-	 * @param int   $chunkZ
 	 * @param Chunk $chunk
 	 */
-	public function setChunk(int $chunkX, int $chunkZ, Chunk $chunk);
+	public function saveChunk(Chunk $chunk) : void;
 
 	/**
-	 * @param int $chunkX
-	 * @param int $chunkZ
+	 * Loads a chunk (usually from disk storage) and returns it. If the chunk does not exist, null is returned, or an
+	 * empty Chunk if $create is specified.
 	 *
-	 * @return bool
-	 */
-	public function saveChunk(int $chunkX, int $chunkZ) : bool;
-
-	public function saveChunks();
-
-	/**
 	 * @param int  $chunkX
 	 * @param int  $chunkZ
 	 * @param bool $create
 	 *
-	 * @return bool
+	 * @return null|Chunk
 	 */
-	public function loadChunk(int $chunkX, int $chunkZ, bool $create = false) : bool;
-
-	/**
-	 * @param int  $chunkX
-	 * @param int  $chunkZ
-	 * @param bool $safe
-	 *
-	 * @return bool
-	 */
-	public function unloadChunk(int $chunkX, int $chunkZ, bool $safe = true) : bool;
-
-	public function unloadChunks();
-
-	/**
-	 * @param int $chunkX
-	 * @param int $chunkZ
-	 *
-	 * @return bool
-	 */
-	public function isChunkLoaded(int $chunkX, int $chunkZ) : bool;
-
-	/**
-	 * @param int $chunkX
-	 * @param int $chunkZ
-	 *
-	 * @return bool
-	 */
-	public function isChunkGenerated(int $chunkX, int $chunkZ) : bool;
-
-	/**
-	 * @param int $chunkX
-	 * @param int $chunkZ
-	 *
-	 * @return bool
-	 */
-	public function isChunkPopulated(int $chunkX, int $chunkZ) : bool;
+	public function loadChunk(int $chunkX, int $chunkZ, bool $create = false) : ?Chunk;
 
 	/**
 	 * @return string
@@ -208,17 +152,13 @@ interface LevelProvider{
 	public function setDifficulty(int $difficulty);
 
 	/**
-	 * @return Chunk[]
+	 * Performs garbage collection in the level provider, such as cleaning up regions in Region-based worlds.
 	 */
-	public function getLoadedChunks() : array;
-
 	public function doGarbageCollection();
 
 	/**
-	 * @return Level
+	 * Performs cleanups necessary when the level provider is closed and no longer needed.
 	 */
-	public function getLevel() : Level;
-
 	public function close();
 
 }
diff --git a/src/pocketmine/level/format/io/leveldb/LevelDB.php b/src/pocketmine/level/format/io/leveldb/LevelDB.php
index 3c58396dd..c13292af6 100644
--- a/src/pocketmine/level/format/io/leveldb/LevelDB.php
+++ b/src/pocketmine/level/format/io/leveldb/LevelDB.php
@@ -74,9 +74,6 @@ class LevelDB extends BaseLevelProvider{
 	public const CURRENT_LEVEL_CHUNK_VERSION = 7;
 	public const CURRENT_LEVEL_SUBCHUNK_VERSION = 0;
 
-	/** @var Chunk[] */
-	protected $chunks = [];
-
 	/** @var \LevelDB */
 	protected $db;
 
@@ -90,10 +87,9 @@ class LevelDB extends BaseLevelProvider{
 		}
 	}
 
-	public function __construct(Level $level, string $path){
+	public function __construct(string $path){
 		self::checkForLevelDBExtension();
 
-		$this->level = $level;
 		$this->path = $path;
 		if(!file_exists($this->path)){
 			mkdir($this->path, 0777, true);
@@ -249,13 +245,6 @@ class LevelDB extends BaseLevelProvider{
 		file_put_contents($this->getPath() . "level.dat", Binary::writeLInt(self::CURRENT_STORAGE_VERSION) . Binary::writeLInt(strlen($buffer)) . $buffer);
 	}
 
-	public function unloadChunks(){
-		foreach($this->chunks as $chunk){
-			$this->unloadChunk($chunk->getX(), $chunk->getZ(), false);
-		}
-		$this->chunks = [];
-	}
-
 	public function getGenerator() : string{
 		return (string) $this->levelData["generatorName"];
 	}
@@ -272,48 +261,13 @@ class LevelDB extends BaseLevelProvider{
 		$this->levelData->setInt("Difficulty", $difficulty); //yes, this is intended! (in PE: int, PC: byte)
 	}
 
-	public function getLoadedChunks() : array{
-		return $this->chunks;
-	}
-
-	public function isChunkLoaded(int $x, int $z) : bool{
-		return isset($this->chunks[Level::chunkHash($x, $z)]);
-	}
-
-	public function saveChunks(){
-		foreach($this->chunks as $chunk){
-			$this->saveChunk($chunk->getX(), $chunk->getZ());
-		}
-	}
-
-	public function loadChunk(int $chunkX, int $chunkZ, bool $create = false) : bool{
-		if(isset($this->chunks[$index = Level::chunkHash($chunkX, $chunkZ)])){
-			return true;
-		}
-
-		$this->level->timings->syncChunkLoadDataTimer->startTiming();
-		$chunk = $this->readChunk($chunkX, $chunkZ);
-		if($chunk === null and $create){
-			$chunk = new Chunk($chunkX, $chunkZ);
-		}
-		$this->level->timings->syncChunkLoadDataTimer->stopTiming();
-
-		if($chunk !== null){
-			$this->chunks[$index] = $chunk;
-
-			return true;
-		}else{
-			return false;
-		}
-	}
-
 	/**
 	 * @param int $chunkX
 	 * @param int $chunkZ
 	 *
 	 * @return Chunk|null
 	 */
-	private function readChunk($chunkX, $chunkZ){
+	protected function readChunk(int $chunkX, int $chunkZ) : ?Chunk{
 		$index = LevelDB::chunkIndex($chunkX, $chunkZ);
 
 		if(!$this->chunkExists($chunkX, $chunkZ)){
@@ -484,7 +438,7 @@ class LevelDB extends BaseLevelProvider{
 		}
 	}
 
-	private function writeChunk(Chunk $chunk){
+	protected function writeChunk(Chunk $chunk) : void{
 		$index = LevelDB::chunkIndex($chunk->getX(), $chunk->getZ());
 		$this->db->put($index . self::TAG_VERSION, chr(self::CURRENT_LEVEL_CHUNK_VERSION));
 
@@ -557,49 +511,6 @@ class LevelDB extends BaseLevelProvider{
 		}
 	}
 
-	public function unloadChunk(int $x, int $z, bool $safe = true) : bool{
-		$chunk = $this->chunks[$index = Level::chunkHash($x, $z)] ?? null;
-		if($chunk instanceof Chunk and $chunk->unload($safe)){
-			unset($this->chunks[$index]);
-
-			return true;
-		}
-
-		return false;
-	}
-
-	public function saveChunk(int $chunkX, int $chunkZ) : bool{
-		if($this->isChunkLoaded($chunkX, $chunkZ)){
-			$chunk = $this->getChunk($chunkX, $chunkZ);
-			if(!$chunk->isGenerated()){
-				throw new \InvalidStateException("Cannot save un-generated chunk");
-			}
-			$this->writeChunk($chunk);
-
-			return true;
-		}
-
-		return false;
-	}
-
-	/**
-	 * @param int $chunkX
-	 * @param int $chunkZ
-	 * @param bool $create
-	 *
-	 * @return Chunk|null
-	 */
-	public function getChunk(int $chunkX, int $chunkZ, bool $create = false){
-		$index = Level::chunkHash($chunkX, $chunkZ);
-		if(isset($this->chunks[$index])){
-			return $this->chunks[$index];
-		}else{
-			$this->loadChunk($chunkX, $chunkZ, $create);
-
-			return $this->chunks[$index] ?? null;
-		}
-	}
-
 	/**
 	 * @return \LevelDB
 	 */
@@ -607,17 +518,6 @@ class LevelDB extends BaseLevelProvider{
 		return $this->db;
 	}
 
-	public function setChunk(int $chunkX, int $chunkZ, Chunk $chunk){
-		$chunk->setX($chunkX);
-		$chunk->setZ($chunkZ);
-
-		if(isset($this->chunks[$index = Level::chunkHash($chunkX, $chunkZ)]) and $this->chunks[$index] !== $chunk){
-			$this->unloadChunk($chunkX, $chunkZ, false);
-		}
-
-		$this->chunks[$index] = $chunk;
-	}
-
 	public static function chunkIndex(int $chunkX, int $chunkZ) : string{
 		return Binary::writeLInt($chunkX) . Binary::writeLInt($chunkZ);
 	}
@@ -626,22 +526,7 @@ class LevelDB extends BaseLevelProvider{
 		return $this->db->get(LevelDB::chunkIndex($chunkX, $chunkZ) . self::TAG_VERSION) !== false;
 	}
 
-	public function isChunkGenerated(int $chunkX, int $chunkZ) : bool{
-		return $this->chunkExists($chunkX, $chunkZ) and ($chunk = $this->getChunk($chunkX, $chunkZ, false)) !== null;
-	}
-
-	public function isChunkPopulated(int $chunkX, int $chunkZ) : bool{
-		$chunk = $this->getChunk($chunkX, $chunkZ);
-		if($chunk instanceof Chunk){
-			return $chunk->isPopulated();
-		}else{
-			return false;
-		}
-	}
-
 	public function close(){
-		$this->unloadChunks();
 		$this->db->close();
-		$this->level = null;
 	}
 }
diff --git a/src/pocketmine/level/format/io/region/McRegion.php b/src/pocketmine/level/format/io/region/McRegion.php
index 4d31e7eec..01401da2e 100644
--- a/src/pocketmine/level/format/io/region/McRegion.php
+++ b/src/pocketmine/level/format/io/region/McRegion.php
@@ -44,9 +44,6 @@ class McRegion extends BaseLevelProvider{
 	/** @var RegionLoader[] */
 	protected $regions = [];
 
-	/** @var Chunk[] */
-	protected $chunks = [];
-
 	/**
 	 * @param Chunk $chunk
 	 *
@@ -283,126 +280,6 @@ class McRegion extends BaseLevelProvider{
 		$this->levelData->setByte("Difficulty", $difficulty);
 	}
 
-	public function getChunk(int $chunkX, int $chunkZ, bool $create = false){
-		$index = Level::chunkHash($chunkX, $chunkZ);
-		if(isset($this->chunks[$index])){
-			return $this->chunks[$index];
-		}else{
-			$this->loadChunk($chunkX, $chunkZ, $create);
-
-			return $this->chunks[$index] ?? null;
-		}
-	}
-
-	public function setChunk(int $chunkX, int $chunkZ, Chunk $chunk){
-		self::getRegionIndex($chunkX, $chunkZ, $regionX, $regionZ);
-		$this->loadRegion($regionX, $regionZ);
-
-		$chunk->setX($chunkX);
-		$chunk->setZ($chunkZ);
-
-
-		if(isset($this->chunks[$index = Level::chunkHash($chunkX, $chunkZ)]) and $this->chunks[$index] !== $chunk){
-			$this->unloadChunk($chunkX, $chunkZ, false);
-		}
-
-		$this->chunks[$index] = $chunk;
-	}
-
-	public function saveChunk(int $chunkX, int $chunkZ) : bool{
-		if($this->isChunkLoaded($chunkX, $chunkZ)){
-			$chunk = $this->getChunk($chunkX, $chunkZ);
-			if(!$chunk->isGenerated()){
-				throw new \InvalidStateException("Cannot save un-generated chunk");
-			}
-			$this->getRegion($chunkX >> 5, $chunkZ >> 5)->writeChunk($chunkX & 0x1f, $chunkZ & 0x1f, $this->nbtSerialize($chunk));
-
-			return true;
-		}
-
-		return false;
-	}
-
-	public function saveChunks(){
-		foreach($this->chunks as $chunk){
-			$this->saveChunk($chunk->getX(), $chunk->getZ());
-		}
-	}
-
-	public function loadChunk(int $chunkX, int $chunkZ, bool $create = false) : bool{
-		$index = Level::chunkHash($chunkX, $chunkZ);
-		if(isset($this->chunks[$index])){
-			return true;
-		}
-		$regionX = $regionZ = null;
-		self::getRegionIndex($chunkX, $chunkZ, $regionX, $regionZ);
-		assert(is_int($regionX) and is_int($regionZ));
-
-		$this->loadRegion($regionX, $regionZ);
-		$this->level->timings->syncChunkLoadDataTimer->startTiming();
-
-		$chunk = null;
-
-		$chunkData = $this->getRegion($regionX, $regionZ)->readChunk($chunkX & 0x1f, $chunkZ & 0x1f);
-		if($chunkData !== null){
-			$chunk = $this->nbtDeserialize($chunkData);
-		}
-
-		if($chunk === null and $create){
-			$chunk = new Chunk($chunkX, $chunkZ);
-		}
-		$this->level->timings->syncChunkLoadDataTimer->stopTiming();
-
-		if($chunk !== null){
-			$this->chunks[$index] = $chunk;
-			return true;
-		}else{
-			return false;
-		}
-	}
-
-	public function unloadChunk(int $chunkX, int $chunkZ, bool $safe = true) : bool{
-		$chunk = $this->chunks[$index = Level::chunkHash($chunkX, $chunkZ)] ?? null;
-		if($chunk instanceof Chunk and $chunk->unload($safe)){
-			unset($this->chunks[$index]);
-			return true;
-		}
-
-		return false;
-	}
-
-	public function unloadChunks(){
-		foreach($this->chunks as $chunk){
-			$this->unloadChunk($chunk->getX(), $chunk->getZ(), false);
-		}
-		$this->chunks = [];
-	}
-
-	public function isChunkLoaded(int $chunkX, int $chunkZ) : bool{
-		return isset($this->chunks[Level::chunkHash($chunkX, $chunkZ)]);
-	}
-
-	public function isChunkGenerated(int $chunkX, int $chunkZ) : bool{
-		if(($region = $this->getRegion($chunkX >> 5, $chunkZ >> 5)) !== null){
-			return $region->chunkExists($chunkX & 0x1f, $chunkZ & 0x1f) and $this->getChunk($chunkX & 0x1f, $chunkZ & 0x1f, true)->isGenerated();
-		}
-
-		return false;
-	}
-
-	public function isChunkPopulated(int $chunkX, int $chunkZ) : bool{
-		$chunk = $this->getChunk($chunkX, $chunkZ);
-		if($chunk !== null){
-			return $chunk->isPopulated();
-		}else{
-			return false;
-		}
-	}
-
-	public function getLoadedChunks() : array{
-		return $this->chunks;
-	}
-
 	public function doGarbageCollection(){
 		$limit = time() - 300;
 		foreach($this->regions as $index => $region){
@@ -473,11 +350,34 @@ class McRegion extends BaseLevelProvider{
 	}
 
 	public function close(){
-		$this->unloadChunks();
 		foreach($this->regions as $index => $region){
 			$region->close();
 			unset($this->regions[$index]);
 		}
-		$this->level = null;
+	}
+
+	protected function readChunk(int $chunkX, int $chunkZ) : ?Chunk{
+		$regionX = $regionZ = null;
+		self::getRegionIndex($chunkX, $chunkZ, $regionX, $regionZ);
+		assert(is_int($regionX) and is_int($regionZ));
+
+		$this->loadRegion($regionX, $regionZ);
+
+		$chunkData = $this->getRegion($regionX, $regionZ)->readChunk($chunkX & 0x1f, $chunkZ & 0x1f);
+		if($chunkData !== null){
+			return $this->nbtDeserialize($chunkData);
+		}
+
+		return null;
+	}
+
+	protected function writeChunk(Chunk $chunk) : void{
+		$chunkX = $chunk->getX();
+		$chunkZ = $chunk->getZ();
+
+		self::getRegionIndex($chunkX, $chunkZ, $regionX, $regionZ);
+		$this->loadRegion($regionX, $regionZ);
+
+		$this->getRegion($regionX, $regionZ)->writeChunk($chunkX & 0x1f, $chunkZ & 0x1f, $this->nbtSerialize($chunk));
 	}
 }
diff --git a/tests/preprocessor b/tests/preprocessor
index 316fd5606..726930e59 160000
--- a/tests/preprocessor
+++ b/tests/preprocessor
@@ -1 +1 @@
-Subproject commit 316fd5606fef1191e7f228d3156dd1518c33aba4
+Subproject commit 726930e597fd4dd4c9941a8e3dfdb7b99d78937b