Waterproof mahjong tilesUniversity‑of‑illinois‑urbana‑champaign‑cultural‑student‑groups‑in‑Champaign‑organize‑regular‑mahjong‑meetups‑that‑welcome‑complete‑beginners‑and‑provide‑printed‑rule‑handouts‑plus‑experienced‑player‑mentor‑support‑through‑every‑stage‑of‑new‑learner‑game‑skill‑development‑process.