Xiaofei Lu @xiaofei-lu Active 5 years, 5 months ago ActivityProfileSites 0Friends 0Groups 0 PersonalMentionsFavoritesFriendsGroups Show: — Everything — Updates New Sites Posts Comments Friendships New Groups Group Memberships Group Updates Xiaofei Lu's profile was updated 5 years, 11 months ago CourseDepartmentFaculty/Staff portfolioProjectStudent portfolio