Originally Posted by Shareholder

.

Also had a similar event occur at PVG when our flight had to turn back from taxiing out due to thick fog. The flight was cancelled and we were all off-loaded and led through Chinese immigration/customs. Now in China you'd expect all sorts of bureaucratic hassles and the like due to expired visas, multi-entry on single entry visas, etc. However, the Chinese agents were very blasé about the whole thing and just waved us through. We didn't have to fill anything out or get new visa stamps. Next morning also expected some hassles leaving with already stamped exit visas but once more, no problems.