Seat Cushion for Long Mahjong — Hard Chairs Win Pain

Seat Cushion for Long Mahjong sounds like a micro-optimization until you are at the Panda Base gift shop where everyone buys the same bamboo hat.

A regular at the corner noodle shop once forgot to screenshot the QR code and became that person at the gate. The fix took less time than telling the story.

Try this once: write the rule on your phone lock screen for three days. If it survives, it is yours.

Works for me in Chengdu humidity.