Difan Lin @difan-lin Active 7 years, 10 months ago ActivityProfileSites 0Friends 0Groups 0 PersonalMentionsFavoritesFriendsGroups Show: — Everything — Updates New Sites Posts Comments Friendships New Groups Group Memberships Group Updates Difan Lin commented on the post, Progress Report for Week Ending, March 22, on the site 8 years, 1 month ago About View Conversation CourseDepartmentFaculty/Staff portfolioProjectStudent portfolio