diff --git a/03-UnrealEngine/Rendering/RenderFeature/ShaderWorldPlugin/ShaderWorld.md b/03-UnrealEngine/Rendering/RenderFeature/ShaderWorldPlugin/ShaderWorld.md
index dc1ce95..8e2858b 100644
--- a/03-UnrealEngine/Rendering/RenderFeature/ShaderWorldPlugin/ShaderWorld.md
+++ b/03-UnrealEngine/Rendering/RenderFeature/ShaderWorldPlugin/ShaderWorld.md
@@ -652,9 +652,6 @@ bool AShaderWorldActor::CollisionPreprocessGPU()
 	return true;
 }
 ```
-
-
-
 #### CollisionGPU()
 ```c++
 
@@ -1481,7 +1478,7 @@ void AShaderWorldActor::UpdateCollisionMeshData(FCollisionMeshElement& Mesh)
 }
 
 ```
-### CollisionCPU
+#### CollisionCPU
 ```c++
 
 void AShaderWorldActor::CollisionCPU()
@@ -1512,22 +1509,24 @@ void AShaderWorldActor::CollisionCPU()
 	}
 
 
-
+	//通过AShaderWorldActor::UpdateCollisionInRegion()来添加碰撞重建区域
 	bool bExternalCollisionRebuildRequest = !CollisionUpdateRequest.IsEmpty();
 	FBox2D BPCollisionRebuildRequest(ForceInit);
-
+	//从CollisionUpdateRequest队列中取出碰撞更新范围
 	if (bExternalCollisionRebuildRequest)
 		CollisionUpdateRequest.Dequeue(BPCollisionRebuildRequest);
 
 	TArray<ShaderWorld::FVisitor> VisitorLocations;
 
 	// Use latest camera we know if current array is empty
-
+	//在BeginPlay()会将ShaderWorld Actor的Location添加到CameraLocations中。
+	//在UpdateCameraLocation()中会将，这个函数会在Setup()中调用。
+	// USWorldSubsystem::Tick()中会调用UpdateVisitors()获取所有USW_CollisionComponent。
 	if (CameraLocations.Num() <= 0)
 		VisitorLocations.Add(CamLocation);
 
 	VisitorLocations.Append(CameraLocations);
-
+	//将bPreprocessingCollisionUpdate线程安全变量设置为true
 	(*bPreprocessingCollisionUpdate.Get()) = true;
 
 	Async(EAsyncExecution::TaskGraph, [Completion = bPreprocessingCollisionUpdate, CollData = CollisionShareable,
@@ -1547,7 +1546,6 @@ void AShaderWorldActor::CollisionCPU()
 			double CollisionWidth = CollData->CollisionResolution * (CollData->VerticePerPatch - 1);
 
 			TMap<FIntVector, FVector> BrushRedraws;
-
 			for (const FBox2d& B : BrushScope)
 			{
 				const int32 MinBoxX_local = FMath::FloorToInt(((double)(B.Min.X + LocalOriginLocation.X)) / CollisionWidth + 0.45);