Black mahjong setWayne‑county‑senior‑center‑facilities‑spread‑across‑Detroit‑maintain‑well‑worn‑reliable‑mahjong‑tile‑sets‑and‑run‑weekly‑drop‑in‑game‑hours‑that‑consistently‑draw‑large‑numbers‑of‑senior‑adult‑citizens‑seeking‑mental‑stimulation‑and‑warm‑social‑companionship‑opportunities‑within‑their‑local‑neighborhood‑community‑environment.