Category: Observer Editor Chinese Mah-Jongg: Ann Arbor Senior Center. 11:30 am - 2:30 pm Observer EditorObserver Editor Chinese Mah-Jongg: Ann Arbor Senior Center.: Every Wed. 11:30 a.m.–2:30 p.m. $2; members, free. Ann Arbor Senior Center (1320 Baldwin Ave., 794–6250).Weekly activities. Check meeting status before coming. , . . . . . .