diff --git a/fastbuilder/environment/environment.go b/fastbuilder/environment/environment.go
index 207165848..69c1b405e 100644
--- a/fastbuilder/environment/environment.go
+++ b/fastbuilder/environment/environment.go
@@ -37,6 +37,8 @@ type PBEnvironment struct {
 	CertSigning               bool
 	LocalKey                  string
 	LocalCert                 string
+	LRUMemoryChunkCacher      interface{}
+	ChunkFeeder               interface{}
 }
 
 func (env *PBEnvironment) Stop() {
diff --git a/io/special_tasks/export.go b/io/special_tasks/export.go
index 843fb8152..0257124ab 100644
--- a/io/special_tasks/export.go
+++ b/io/special_tasks/export.go
@@ -19,6 +19,7 @@ import (
 	"phoenixbuilder/minecraft"
 	"phoenixbuilder/minecraft/protocol"
 	"phoenixbuilder/minecraft/protocol/packet"
+	"phoenixbuilder/mirror/io/lru"
 	"phoenixbuilder/mirror/chunk"
 	"runtime"
 	"strconv"
@@ -78,7 +79,7 @@ func CreateExportTask(commandLine string, env *environment.PBEnvironment) *task.
 	hopPath,requiredChunks:=fetcher.PlanHopSwapPath(startX,startZ,endX,endZ,16)
 	chunkPool:=map[fetcher.ChunkPosDefine]fetcher.ChunkDefine{}
 	memoryCacheFetcher:=fetcher.CreateCacheHitFetcher(requiredChunks,chunkPool)
-	global.GlobalLRUMemoryChunkCacher.Iter(func(pos define.ChunkPos, chunk *mirror.ChunkData) (stop bool) {
+	env.LRUMemoryChunkCacher.(*lru.LRUMemoryChunkCacher).Iter(func(pos define.ChunkPos, chunk *mirror.ChunkData) (stop bool) {
 		memoryCacheFetcher(fetcher.ChunkPosDefine{int(pos[0])*16,int(pos[1])*16},fetcher.ChunkDefine(chunk))
 		return false
 	})
@@ -93,7 +94,7 @@ func CreateExportTask(commandLine string, env *environment.PBEnvironment) *task.
 		cmdsender.SendCommand(cmd,uid)
 	}
 	feedChan:=make(chan *fetcher.ChunkDefineWithPos,1024)
-	deRegFn:=global.GlobalChunkFeeder.RegNewReader(func (chunk *mirror.ChunkData)  {
+	deRegFn:=env.ChunkFeeder.(*global.ChunkFeeder).RegNewReader(func (chunk *mirror.ChunkData)  {
 		feedChan<-&fetcher.ChunkDefineWithPos{Chunk: fetcher.ChunkDefine(chunk),Pos:fetcher.ChunkPosDefine{int(chunk.ChunkPos[0])*16,int(chunk.ChunkPos[1])*16}}
 	})
 	inHopping:=true
diff --git a/main.go b/main.go
index 735d751d5..4bb64306e 100644
--- a/main.go
+++ b/main.go
@@ -29,6 +29,7 @@ import (
 	"phoenixbuilder/minecraft/protocol/packet"
 	"phoenixbuilder/mirror/io/assembler"
 	"phoenixbuilder/mirror/io/global"
+	"phoenixbuilder/mirror/io/lru"
 	"phoenixbuilder/omega/cli/embed"
 	"phoenixbuilder/omega/suggest"
 	"runtime"
@@ -201,19 +202,12 @@ func create_environment() *environment.PBEnvironment {
 	env.ScriptBridge = hostBridgeGamma
 	scriptHolder := script_holder.InitScriptHolder(env)
 	env.ScriptHolder = scriptHolder
-	/*if args.StartupScript() == "" {
-		hostBridgeGamma.HostRemoveBlock()
-	} else {
-		if scriptHolder.LoadScript(args.StartupScript(), env) {
-			hostBridgeGamma.HostWaitScriptBlock()
-		} else {
-			hostBridgeGamma.HostRemoveBlock()
-		}
-	}*/
 	if args.StartupScript() != "" {
 		scriptHolder.LoadScript(args.StartupScript(), env)
 	}
 	hostBridgeGamma.HostRemoveBlock()
+	env.LRUMemoryChunkCacher=lru.NewLRUMemoryChunkCacher(12)
+	env.ChunkFeeder=global.NewChunkFeeder()
 	return env
 }
 
@@ -668,8 +662,8 @@ func runClient(env *environment.PBEnvironment) {
 			chunkData := chunkAssembler.OnNewSubChunk(p)
 			if chunkData != nil {
 				// fmt.Println("new chunk")
-				global.GlobalChunkFeeder.OnNewChunk(chunkData)
-				global.GlobalLRUMemoryChunkCacher.Write(chunkData)
+				env.ChunkFeeder.(*global.ChunkFeeder).OnNewChunk(chunkData)
+				env.LRUMemoryChunkCacher.(*lru.LRUMemoryChunkCacher).Write(chunkData)
 				// if env.OmegaAdaptorHolder != nil {
 				// 	fmt.Println("new chunk")
 				// 	env.OmegaAdaptorHolder.(*embed.EmbeddedAdaptor).FeedChunkData(chunkData)
diff --git a/mirror/io/global/feeder.go b/mirror/io/global/feeder.go
index 9c9b623b4..5003b8f96 100644
--- a/mirror/io/global/feeder.go
+++ b/mirror/io/global/feeder.go
@@ -45,6 +45,6 @@ func (o *ChunkFeeder) RegNewReader(fn ChunkWriteFn) (unRegFn func()) {
 	}
 }
 
-func init() {
+/*func init() {
 	GlobalChunkFeeder = NewChunkFeeder()
-}
+}*/
diff --git a/mirror/io/global/vars.go b/mirror/io/global/vars.go
index cc5bc6ca4..80b86579c 100644
--- a/mirror/io/global/vars.go
+++ b/mirror/io/global/vars.go
@@ -2,15 +2,6 @@ package global
 
 import (
 	"phoenixbuilder/mirror"
-	"phoenixbuilder/mirror/io/lru"
 )
 
-type ChunkWriteFn func(chunk *mirror.ChunkData)
-
-var GlobalLRUMemoryChunkCacher *lru.LRUMemoryChunkCacher
-var GlobalChunkFeeder *ChunkFeeder
-
-func init() {
-	GlobalLRUMemoryChunkCacher = lru.NewLRUMemoryChunkCacher(12)
-	GlobalChunkFeeder = NewChunkFeeder()
-}
+type ChunkWriteFn func(chunk *mirror.ChunkData)
\ No newline at end of file