Xuanchen Guo @xuanchen-guo Active 6 years, 7 months ago ActivityProfileSites 0Friends 0Groups 0 PersonalMentionsFavoritesFriendsGroups Show: — Everything — Updates New Sites Posts Comments Friendships New Groups Group Memberships Group Updates Xuanchen Guo created the site xuanchen guo 6 years, 11 months ago CourseDepartmentFaculty/Staff portfolioProjectStudent portfolio