Originally Posted by
nk15
and may also bring up visa issues (if more than one connection in China).
Many nationalities can have multiple transfers without visa, if completed within 24 hours, however there are some exclusions. Some people want to avoid transfers in China all together. I've had several transfers in the past, got burnt only once. I wouldn't recommend this to certain people, for example, my parents. There's this massive wiki and thread about twov:
China 24, 72, and 144 hour Transit Without Visa ("TWOV") rules master thread