Tote Ready at Book Fair — Hand Stacks End at Stall Three

Tote Ready at Book Fair sounds like a micro-optimization until you are at the Panda Base gift shop where everyone buys the same bamboo hat.

A student I met at a language exchange 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.