Zijian Tian @zijian-tian Active 3 months ago ActivityProfileSites 1Friends 0Groups 0 PersonalMentionsFavoritesFriendsGroups Show: — Everything — Updates New Sites Posts Comments Friendships New Groups Group Memberships Group Updates Zijian Tian changed their profile picture 6 months, 1 week ago CourseDepartmentFaculty/Staff portfolioProjectStudent portfolio