Shock resistant mahjong caseCoastal‑city‑retirement‑community‑clubs‑located‑inside‑Virginia‑Beach‑organize‑weekly‑mahjong‑social‑hours‑that‑mix‑friendly‑tile‑game‑competition‑with‑casual‑conversation‑and‑light‑refreshment‑sharing‑among‑senior‑resident‑participants.