diff --git a/README.md b/README.md
index dd258af..05279c7 100644
--- a/README.md
+++ b/README.md
@@ -3,12 +3,29 @@ 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)
+* Yilin Li
+* Tested on: Windows 10, i7-12700H @ 2.30GHz 16GB, NVIDIA RTX 3060  (personal laptop)
 
-### (TODO: Your README)
+## Project Write-up
 
-Include screenshots, analysis, etc. (Remember, this is public, so don't put
-anything here that you don't want to share with the world.)
+### Part 3.1: CUDA
 
+The Compute Capability of NVIDIA T1000 is 8.6. 
+
+### Part 3.1.1 
+![](images/3.1.1.jpg)
+
+
+### Part 3.1.2
+![](images/3.1.2.jpg)
+
+### Part 3.1.3
+![](images/3.1.3.jpg)
+
+### Part 3.2 
+![](images/3.2.jpg)
+
+### Part 3.3 
+The laptop has DXR support but the following error pops out after the expected image appears for half a second. 
+
+> 'Unhandled exception at 0x00007FFA3467474C (KernelBase.dll) in D3D12RaytracingHelloWorld.exe: 0x0000087A (parameters: 0x0000000000000001, 0x0000005DBE6FC280, 0x0000005DBE6FE060).'
diff --git a/cuda-getting-started/src/main.cpp b/cuda-getting-started/src/main.cpp
index 886fd4c..b22b0c2 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 = "Yilin Li";
 
     if (init(argc, argv)) {
         mainLoop();
diff --git a/dxr-support/src/D3D12RaytracingHelloWorld/Raytracing.hlsl b/dxr-support/src/D3D12RaytracingHelloWorld/Raytracing.hlsl
index d817ca4..c3a44c9 100644
--- a/dxr-support/src/D3D12RaytracingHelloWorld/Raytracing.hlsl
+++ b/dxr-support/src/D3D12RaytracingHelloWorld/Raytracing.hlsl
@@ -70,6 +70,7 @@ void MyRaygenShader()
 void MyClosestHitShader(inout RayPayload payload, in MyAttributes attr)
 {
     float3 barycentrics = float3(1 - attr.barycentrics.x - attr.barycentrics.y, attr.barycentrics.x, attr.barycentrics.y);
+    barycentrics = float3(0, 0.8, 1);
     payload.color = float4(barycentrics, 1);
 }
 
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