Basement entertainment mahjongSouth‑carolina‑state‑capital‑multicultural‑non‑profit‑organizations‑in‑Columbia‑run‑public‑mahjong‑demonstration‑events‑at‑local‑cultural‑fairs‑to‑expand‑general‑public‑understanding‑of‑this‑ancient‑tile‑game‑and‑its‑rich‑cross‑cultural‑historical‑origins.