Walk Left on Transfer Corridors — Standing Creates Traffic Jams

Walk Left on Transfer Corridors sounds like a micro-optimization until you are on a Didi ride through rain that turns Chengdu traffic into performance art.

A student I met at a language exchange once got locked out because the fingerprint reader hates sweaty thumbs. 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.

Your mileage may vary.