Zijian Tian @zijian-tian Active 1 week, 2 days ago ActivityProfileSites 0Friends 0Groups 0 PersonalMentionsFavoritesFriendsGroups Show: — Everything — Updates New Sites Posts Comments Friendships New Groups Group Memberships Group Updates Zijian Tian changed their profile picture 1 month, 3 weeks ago CourseDepartmentFaculty/Staff portfolioProjectStudent portfolio