diff --git a/README.md b/README.md
index dd258af..fbe2354 100644
--- a/README.md
+++ b/README.md
@@ -3,12 +3,23 @@ Project 0 Getting Started
 
 **University of Pennsylvania, CIS 565: GPU Programming and Architecture, Project 0**
 
-* (TODO) YOUR NAME HERE
-  * (TODO) [LinkedIn](), [personal website](), [twitter](), etc.
-* Tested on: (TODO) Windows 22, i7-2222 @ 2.22GHz 22GB, GTX 222 222MB (Moore 2222 Lab)
+* Tong Hu 
+  * [LinkedIn](https://www.linkedin.com/in/tong-hu-5819a122a/).
+* Tested on: Windows 11, Ryzen 7 1700X @ 3.4GHz 16GB, GTX 1080 16GB (Personal Computer)
 
-### (TODO: Your README)
+### Screenshots
 
-Include screenshots, analysis, etc. (Remember, this is public, so don't put
-anything here that you don't want to share with the world.)
+![](images/CUDA_getting_started_screenshot.png)
+Figure 1. Screenshot of modified CUDA project in Part 3.1.1.
 
+![](images/Nsignt_screenshot.png)
+Figure 2. Screenshot of Nsight in Part 3.1.2.
+
+![](images/warp_info_idx_1024.png)
+Figure 3. Screenshot of warp info in Part 3.1.3.
+
+![](images/webgl_status.png)
+Figure 4. Screenshot of webgl status in Part 3.2.
+
+![](images/DXR_screenshot.png)
+Figure 5. Screenshot of DXR test after changing in Part 3.3.
\ No newline at end of file
diff --git a/cuda-getting-started/src/main.cpp b/cuda-getting-started/src/main.cpp
index 886fd4c..c253b9f 100644
--- a/cuda-getting-started/src/main.cpp
+++ b/cuda-getting-started/src/main.cpp
@@ -11,7 +11,7 @@
  */
 int main(int argc, char* argv[]) {
     // TODO: Change this line to use your name!
-    m_yourName = "TODO: YOUR NAME HERE";
+    m_yourName = "Tong Hu";
 
     if (init(argc, argv)) {
         mainLoop();
diff --git a/dxr-support/src/D3D12RaytracingHelloWorld/Raytracing.hlsl b/dxr-support/src/D3D12RaytracingHelloWorld/Raytracing.hlsl
index d817ca4..c661f9f 100644
--- a/dxr-support/src/D3D12RaytracingHelloWorld/Raytracing.hlsl
+++ b/dxr-support/src/D3D12RaytracingHelloWorld/Raytracing.hlsl
@@ -69,7 +69,8 @@ void MyRaygenShader()
 [shader("closesthit")]
 void MyClosestHitShader(inout RayPayload payload, in MyAttributes attr)
 {
-    float3 barycentrics = float3(1 - attr.barycentrics.x - attr.barycentrics.y, attr.barycentrics.x, attr.barycentrics.y);
+    //float3 barycentrics = float3(1 - attr.barycentrics.x - attr.barycentrics.y, attr.barycentrics.x, attr.barycentrics.y);
+    float3 barycentrics = float3(0.2, 0.8, 0.5);
     payload.color = float4(barycentrics, 1);
 }
 
diff --git a/images/CUDA_getting_started_screenshot.png b/images/CUDA_getting_started_screenshot.png
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diff --git a/images/Nsignt_screenshot.png b/images/Nsignt_screenshot.png
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diff --git a/images/warp_info_idx_1024.png b/images/warp_info_idx_1024.png
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diff --git a/images/webgl_status.png b/images/webgl_status.png
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