diff --git a/03-UnrealEngine/卡通渲染相关资料/渲染功能/阴影控制/ToonShadow.md b/03-UnrealEngine/卡通渲染相关资料/渲染功能/阴影控制/ToonShadow.md
index 1c94c25..b2db74c 100644
--- a/03-UnrealEngine/卡通渲染相关资料/渲染功能/阴影控制/ToonShadow.md
+++ b/03-UnrealEngine/卡通渲染相关资料/渲染功能/阴影控制/ToonShadow.md
@@ -179,6 +179,8 @@ if (bToonDirectionOffsetToViewShadow && LightSceneInfo->Proxy->GetLightType() ==
 ```
 
 # NoSelfShadow
+https://zhuanlan.zhihu.com/p/10073818586?utm_psn=1877051516055076866
+
 UPrimitiveComponent::bSelfShadowOnly
 =>
 FPrimitiveSceneProxy::bSelfShadowOnly => **CastsSelfShadowOnly()**