Yanpeng Zhai @yanpeng-zhai Active 5 years, 10 months ago ActivityProfileSites 0Friends 0Groups 0 PersonalMentionsFavoritesFriendsGroups Show: — Everything — Updates New Sites Posts Comments Friendships New Groups Group Memberships Group Updates Yanpeng Zhai changed their profile picture 6 years ago Yanpeng Zhai changed their profile picture 6 years ago Yanpeng Zhai's profile was updated 6 years ago CourseDepartmentFaculty/Staff portfolioProjectStudent portfolio