diff --git a/content/authors/ewen-low/_index.md b/content/authors/ewen-low/_index.md
deleted file mode 100644
index 29acbe14..00000000
--- a/content/authors/ewen-low/_index.md
+++ /dev/null
@@ -1,42 +0,0 @@
----
-# Display name
-title: Ewen Low
-
-# Is this the primary user of the site?
-superuser: false
-
-# Role/position
-role: Undergraduate Student
-
-# Organizations/Affiliations
-organizations:
-- name: National University of Singapore
-  url: ""
-
-# Short bio (displayed in user profile at end of posts)
-bio: Ewen is an undergraduate student in Computer Science at the National University of Singapore. His Final Year Project is on Testcase Generation for Word-level Hardware Model Checkers.
-
-# Social/Academic Networking
-# For available icons, see: https://sourcethemes.com/academic/docs/page-builder/#icons
-#   For an email link, use "fas" icon pack, "envelope" icon, and a link in the
-#   form "mailto:your-email@example.com" or "#contact" for contact widget.
-social:
-- icon: envelope
-  icon_pack: fas
-  link: 'mailto:ewen.low@u.nus.edu'
-- icon: linkedin
-  icon_pack: fab
-  link: https://www.linkedin.com/in/ewen-low/
-- icon: github
-  icon_pack: fab
-  link: https://github.com/oolongwater
-
-# Highlight the author in author lists? (true/false)
-
-# Organizational groups that you belong to (for People widget)
-#   Set this to `[]` or comment out if you are not using People widget.
-user_groups:
-- Undergraduate Students
----
-
-Ewen is an undergraduate student in Computer Science at the National University of Singapore. His Final Year Project is on Testcase Generation for Word-level Hardware Model Checkers.
diff --git a/content/authors/ewen-low/avatar.png b/content/authors/ewen-low/avatar.png
deleted file mode 100644
index 1d85bfa7..00000000
Binary files a/content/authors/ewen-low/avatar.png and /dev/null differ
diff --git a/content/authors/yuancheng-jiang/_index.md b/content/authors/yuancheng-jiang/_index.md
index dd7fa3a7..c46f0579 100644
--- a/content/authors/yuancheng-jiang/_index.md
+++ b/content/authors/yuancheng-jiang/_index.md
@@ -7,7 +7,7 @@ native_name: 蒋元丞
 superuser: false
 
 # Role/position
-role: Student Collaborators
+role: Research Fellow
 
 # Organizations/Affiliations
 organizations: