diff --git a/_config.yml b/_config.yml
index 196f251..decbe4a 100644
--- a/_config.yml
+++ b/_config.yml
@@ -30,7 +30,7 @@ url: "https://chuljja.github.io"
 github:
   username: chuljja # change to your github username
 
-twitter:
+instagram:
   username: chuljja999 # change to your twitter username
 
 social:
@@ -65,7 +65,7 @@ google_analytics:
 #     light  - Use the light color scheme
 #     dark   - Use the dark color scheme
 #
-theme_mode: # [light|dark]
+theme_mode: dark # [light|dark]
 
 # The CDN endpoint for images.
 # Notice that once it is assigned, the CDN url
diff --git a/_posts/.placeholder b/_posts/.placeholder
deleted file mode 100644
index 8b13789..0000000
--- a/_posts/.placeholder
+++ /dev/null
@@ -1 +0,0 @@
-
diff --git a/_posts/2023-10-04-Title.md b/_posts/2023-10-04-Title.md
new file mode 100644
index 0000000..720759b
--- /dev/null
+++ b/_posts/2023-10-04-Title.md
@@ -0,0 +1,19 @@
+---
+title: Who am I?
+date: 2023-10-04 12:00:00 +0800
+categories: [Introduction, About Me]
+tags: [ChulJJA, Chul, Seung]     # TAG names should always be lowercase
+image: /assets/CJ_Floating.jpg
+pin: true
+---
+
+<h1>Who Am I?</h1>
+
+<h3> Hello!</h3>
+<li> I am Chul Seung Lee. </li>
+<li> I am a senior student in Rutgers. </li>
+<li> I am studying computer science. </li>
+
+
+![img-description](/assets/CJ_Happy.jpg){: width="400" height="250" }{: .normal}
+
diff --git a/_posts/test.md b/_posts/test.md
deleted file mode 100644
index 0aa8d6f..0000000
--- a/_posts/test.md
+++ /dev/null
@@ -1,10 +0,0 @@
----
-title: test
-date: 2023-10-02 12:57:00 -500
-categories: [test, hardware]
-tags: [servers, dell, hp, supermicro]
----
-
-# Welcome
-
-Wassup, this is just test. 
\ No newline at end of file
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diff --git a/assets/CJ_Floating.jpg b/assets/CJ_Floating.jpg
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diff --git a/assets/CJ_Happy.jpg b/assets/CJ_Happy.jpg
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diff --git a/assets/CJ_Mood.jpg b/assets/CJ_Mood.jpg
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diff --git a/assets/CJ_Photo.jpg b/assets/CJ_Photo.jpg
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diff --git a/assets/CJ_Sad.jpg b/assets/CJ_Sad.jpg
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diff --git a/assets/CJ_Sunglasses.jpg b/assets/CJ_Sunglasses.jpg
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index 0000000..7d3de3b
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