Ziyi Zhang @ziyi-zhang Active 6 years, 1 month ago ActivityProfileSites 0Friends 0Groups 0 PersonalMentionsFavoritesFriendsGroups Show: — Everything — Updates New Sites Posts Comments Friendships New Groups Group Memberships Group Updates Ziyi Zhang's profile was updated 6 years, 5 months ago Ziyi Zhang changed their profile picture 6 years, 5 months ago CourseDepartmentFaculty/Staff portfolioProjectStudent portfolio