@zhenga4 Active 6 years, 5 months ago ActivityProfileGroups 1 PersonalMentionsFavoritesGroups Show: — Everything — Updates New Groups Group Memberships Group Updates Aaron Xie became a registered member 6 years, 5 months ago Aaron Xie @zhenga4 View Profile Aaron Xie joined the group RPIFall17 6 years, 5 months ago RPIFall17 Visit group