diff --git a/03-UnrealEngine/Rendering/RenderFeature/ShaderWorldPlugin/ShaderWorld.md b/03-UnrealEngine/Rendering/RenderFeature/ShaderWorldPlugin/ShaderWorld.md
index a646555..5a4a5b0 100644
--- a/03-UnrealEngine/Rendering/RenderFeature/ShaderWorldPlugin/ShaderWorld.md
+++ b/03-UnrealEngine/Rendering/RenderFeature/ShaderWorldPlugin/ShaderWorld.md
@@ -155,7 +155,7 @@ void AShaderWorldActor::ReadbacksManagement()
 ### CollisionManagement()
 - ThreadSafe
 	 - bool
-		 - bProcessingGroundCollision
+		 - ***bProcessingGroundCollision***：处理地面碰撞。
 		 - bPreprocessingCollisionUpdate
 		 - EditRebuild：传递Bool值给 rebuild。
 	 - FSWCollisionManagementShareableData
@@ -310,8 +310,8 @@ bool AShaderWorldActor::SetupCollisions()
 }
 ```
 
-#### CollisionFinalizeWork()
-结束碰撞生成任务，true为完成，false为任务超时未完成。
+#### CollisionFinalizeWork() 笔记为3.8.6版本非最新
+结束碰撞生成任务，true为完成，false为任务超时未完成。**主要的逻辑是将之前的数据设置为脏，并且更新FShaderWProceduralMeshSceneProxy,5.4 Finaly版本里这里已经移除了碰撞相关逻辑**
 - TMap<FName,FCollisionMeshElement> CollisionMesh：碰撞Name => 碰撞Mesh Map。
 	- FCollisionMeshElement：管理单个碰撞数据的结构体。
 - UBodySetup：虚幻引擎中一个重要的物理相关类，主要用于定义和存储物体的物理属性和碰撞设置
@@ -455,6 +455,8 @@ void UShaderWorldCollisionComponent::UpdateSectionTriMesh(TSharedPtr<FSWShareabl
 
 #### CollisionPreprocessGPU()
 GPU生成碰撞 的预处理阶段。
+将从GPU回读的碰撞顶点Z轴数据***uint8* ReadData8*** 反序列化成double，之后再还原成***FCollisionProcessingWork.DestB***的Positions、Normals、Positions3f、MaterialIndices、Bound。
+
 ```c++
 bool AShaderWorldActor::CollisionPreprocessGPU()
 {
@@ -499,26 +501,24 @@ bool AShaderWorldActor::CollisionPreprocessGPU()
 			{
 				SW_LOG("CollisionPreprocessGPU :: Mesh.Mesh->GetProcMeshSection(0) = nullptr")
 			}
-
 			
 			CollisionReadToProcess.RemoveAt(CollID);
 		}
 	}
-
+	//回读队列处理完毕后之后执行后续逻辑
 	if (!CollisionReadToProcess.IsEmpty())
 	{
 		return false;
 	}
 
-
+	//开始执行碰撞处理队列逻辑
 	CollisionReadToProcess.Empty();
-
 	if (CollisionWorkQueue.Num() > 0)
 	{
 		(*bProcessingGroundCollision.Get()) = true;
 
 		AShaderWorldActor* SWContext = this;
-
+		//异步并行 反序列化Ground碰撞数据
 		Async(EAsyncExecution::TaskGraph, [Completion = bProcessingGroundCollision, RenderAPI = RendererAPI, VerticesPerPatch = CollisionVerticesPerPatch, Work = CollisionWorkQueue]
 			{
 
@@ -541,6 +541,7 @@ bool AShaderWorldActor::CollisionPreprocessGPU()
 						FVector LocationfVertice_WS(0);
 						uint16 MaterialIndice = 0;
 
+						//取得从GPU回读的序列化数据
 						uint8* ReadData8 = (uint8*)WorkEl.Read->ReadData.GetData();
 
 						TSet<int32>& TrianglesAffectedByHoles = WorkEl.DestB->TrianglesAffectedByHoles;
@@ -559,7 +560,7 @@ bool AShaderWorldActor::CollisionPreprocessGPU()
 							}
 #else
 
-						
+						//从对序列化碰撞Z轴数据进行反序列化，还原成double，再之后还原成FCollisionProcessingWork.DestB
 						for (int32 k = 0; k < NumOfVertex; k++)
 							{
 
@@ -600,6 +601,7 @@ bool AShaderWorldActor::CollisionPreprocessGPU()
 #endif
 						/*
 						 * If the terrain has holes, create a custom index buffer with the related triangles removed
+						 * 地形挖洞，碰撞逻辑处理。
 						 */
 						if(TrianglesAffectedByHoles.Num() > 0)
 						{
@@ -627,6 +629,7 @@ bool AShaderWorldActor::CollisionPreprocessGPU()
 					}
 				);
 
+				//执行完成后将Completion（bProcessingGroundCollision）设置为false代表处理完成。
 				if (Completion.IsValid())
 					Completion->AtomicSet(false);
 
@@ -638,6 +641,20 @@ bool AShaderWorldActor::CollisionPreprocessGPU()
 ```
 
 
+### 
+```c++
+void AShaderWorldActor::CollisionCPU()
+{
+	SCOPED_NAMED_EVENT_TEXT("AShaderWorldActor::CollisionCPU()", FColor::Magenta);
+	SW_FCT_CYCLE()
+
+		if ((*bPreprocessingCollisionUpdate.Get()) ||
+			CollisionShareable->CollisionMeshToUpdate.Num() > 0 ||
+			CollisionShareable->CollisionMeshToRenameMoveUpdate.Num() > 0 ||
+			CollisionShareable->CollisionMeshToCreate.Num() > 0)
+			return;
+```
+
 ### SpawnablesManagement()
 
 ### TerrainAndSpawnablesManagement()