diff --git a/assets/Sustechlogo.psd b/assets/Sustechlogo.psd
new file mode 100644
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diff --git a/assets/cropped-sigchi-logo-3.png b/assets/cropped-sigchi-logo-3.png
new file mode 100644
index 0000000..b9622e7
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diff --git a/assets/logocombine1.jpg b/assets/logocombine1.jpg
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diff --git a/index.markdown b/index.markdown
index 20f47f9..3c13ffe 100644
--- a/index.markdown
+++ b/index.markdown
@@ -40,11 +40,11 @@ layout: home
 <div class="section-title">
     <h1 class="custom-h1">Sponsor</h1>
     <p class="section-content-left">
-    SUSTech School of Design, Seeed Studio / Chaihuo 
+    ACM SIGCHI, SUSTech School of Design, Seeed Studio / Chaihuo 
     </p>
 </div>
 
-![Logo](assets/logocombine.jpg)
+![Logo](assets/logocombine1.jpg)
 
 <style>
 .image-container {
diff --git a/organizer.markdown b/organizer.markdown
index 0a603bb..1554ae2 100644
--- a/organizer.markdown
+++ b/organizer.markdown
@@ -12,15 +12,13 @@ permalink: /organizer/
         <li>Pengcheng An (SUSTech School of Design, Assistant Professor)</li>
         <li>Stefanie Mueller (MIT, Associate Professor)</li>
         <li>Cedric Honnet (MIT, PhD student)</li>
-        <li>Chang Hee Lee (KAIST, Assistant Professor)</li>
-        <li>Tek-Jin Nam (KAIST, Professor)</li>
     </ul>
 </div>
 
 <div class="section-title">
     <h1 class="custom-h1">Student Volunteers</h1>
     <ul class="section-content-left">
-    <li>Yilong Lin</li>
+    <li>Yilong Lin (SUSTech School of Design, Master Student)</li>
     </ul>
 </div>