North‑carolina‑research‑triangle‑park‑area‑meetup‑groups‑based‑in‑Durham‑attract‑very‑diverse‑mahjong‑player‑participant‑crowds‑representing‑many‑different‑age‑ranges,Hard shell mahjong case‑career‑backgrounds‑and‑cultural‑heritage‑origins‑united‑by‑their‑shared‑love‑for‑this‑intriguing‑traditional‑tile‑game‑pastime‑hobby‑interest.