diff --git a/README.md b/README.md
index 4971f59f..cd341730 100644
--- a/README.md
+++ b/README.md
@@ -17,7 +17,6 @@ Moer is developed by NJUMeta (www.njumeta.com) from Nanjing University.
 
 ![classroom](https://user-images.githubusercontent.com/46410388/204492936-a7fc480b-1557-44e9-afaf-56d0ff1537a2.jpg)
 ![hair](https://yjpp.oss-cn-hangzhou.aliyuncs.com/uPic/C6966B38E3AD16F8AC9CC9D86C73921E.jpg)
-![hair](https://yjpp.oss-cn-hangzhou.aliyuncs.com/uPic/curly-hair.png)
 ![teapot](https://yjpp.oss-cn-hangzhou.aliyuncs.com/uPic/tea-pot.png)
 ![disney](https://yjpp.oss-cn-hangzhou.aliyuncs.com/uPic/disneybsdf.png)
 ## Checklist
diff --git a/src/FunctionLayer/Material/HairMaterial.cpp b/src/FunctionLayer/Material/HairMaterial.cpp
index 09b42516..e9475979 100644
--- a/src/FunctionLayer/Material/HairMaterial.cpp
+++ b/src/FunctionLayer/Material/HairMaterial.cpp
@@ -24,11 +24,4 @@ std::shared_ptr < BxDF > HairMaterial::getBxDF(const Intersection & intersect) c
 void HairMaterial::setFrame(Intersection &its, const Ray &ray) const {
     its.shFrame = Frame(its.geometryNormal);
     return;
-    Vec3d T, B, N;
-    N = its.geometryNormal;
-    B = its.geometryTangent;
-    T = cross(B, N);
-    T = normalize(T - dot(T, N) * N);
-    B = cross(N, T);
-    its.shFrame = Frame(T, B, N);
 }