diff --git a/index.html b/index.html
index e4c1edc..b549743 100644
--- a/index.html
+++ b/index.html
@@ -99,11 +99,25 @@ <h2>Languages and Skills</h2>
     <div class="box">
         <ul id="additional_list" class="additional_list">
             <h2>Additional Activities</h2>
-            <li><a href="https://github.com/honlai/Introduction_to_Data_Structure"><span>Introduction to Data Structure</span></a></li>
-            <li><a href="https://github.com/honlai/Numerical_Analysis"><span>Numerical Analysis Methods</span></a></li>
-            <li><a href="https://hackmd.io/SakQx347Qw2WaRaDV4H3pg"><span>Unsupervised Learning</span></a></li>
-            <li><span>Discord bot connect with minecraft server</span></li>
-            <li><span>清大圍棋社</span></li>
+            
+            <li><div class="additional-section">
+                <b>Github</b>
+                <ul>
+                    <li><a href="https://github.com/honlai/Data_Structure_with_CPP"><span>Data Structure with C++</span></a></li>
+                    <li><a href="https://github.com/honlai/Numerical_Analysis_Methods_with_Python"><span>Numerical Analysis Methods with Python</span></a></li>
+                    <li><a href="https://github.com/honlai/The_Painters_Partition_Problem_Using_Binary_Search_with_RISCV_ISA"><span>The Painters Partition Problem Using Binary Search with RISC-V ISA</span></a></li>
+                    <li><a href=""><span></span></a></li>
+                </ul>
+            </div></li>
+            <li><div class="additional-section">
+                <b>Others</b>
+                <ul>
+                    <li><a href="https://hackmd.io/SakQx347Qw2WaRaDV4H3pg"><span>Unsupervised Learning</span></a></li>
+                    <li><span>Discord bot connect with minecraft server</span></li>
+                    <li><span>清大圍棋社</span></li>
+                </ul>
+            </div></li>
+            
         </ul>
     </div>