China 24-Hour and 72-Hour Transit Without Visa (TWOV) Rules Master Thread
My experience:
Had an urgent call to attend a meeting in Chengdu. Booked SIN-CTU-BKK and then separately BKK-SIN.
Arrived at the immigration counter, was asked for my onwards eticket, they called for the 24hr stamp (it was in the office), and I was through within 5min max. Very pleasant and painless experience.