Zhen Li @zhen-li Active 3 years, 3 months ago ActivityProfileSites 1Friends 0Groups 0 PersonalMentionsFavoritesFriendsGroups Show: — Everything — Updates New Sites Posts Comments Friendships New Groups Group Memberships Group Updates Zhen Li's profile was updated 3 years, 10 months ago Zhen Li's profile was updated 3 years, 10 months ago CourseDepartmentFaculty/Staff portfolioProjectStudent portfolio