harmless mahjong tile materialTennessee‑mountain‑valley‑community‑recreation‑centers‑in‑Chattanooga‑run‑ongoing‑mahjong‑social‑clubs‑for‑local‑adult‑residents‑and‑offer‑free‑beginner‑orientation‑sessions‑for‑people‑who‑have‑never‑tried‑playing‑this‑traditional‑tile‑game‑before‑in‑their‑lives.