Jichao Yang @jichao-yang Active 8 years, 3 months ago ActivityProfileSites 0Friends 0Groups 0 PersonalMentionsFavoritesFriendsGroups Show: — Everything — Updates New Sites Posts Comments Friendships New Groups Group Memberships Group Updates Jichao Yang's profile was updated 8 years, 6 months ago CourseDepartmentFaculty/Staff portfolioProjectStudent portfolio