Originally Posted by
dyung
I took advantage of the visa-free transit in PVG last year to do a quick visit to see the expo. I flew NRT-PVG-ICN with 47:15 minutes on the ground in PVG. In the end it worked, but I had to convince the agent in NRT to issue my BP (she had to carefully read the exceptions), and I had to wait at immigration in PVG for about an hour while they verified my outbound flight (no idea why it took so long).
The rule is that you are not required to obtain a visa only if you are transiting through a mainland Chinese airport to another international destination, you do not leave the airport, and you are there for less than 24 hrs.
http://www.china-embassy.org/eng/hzqz/zgqz/t84242.htm
Before I had a Chinese visa, I transited through CAN on my way to TPE. Technically didn't require a visa but still got held up at immigration even though I showed them their own rules.
Of course, the rules were in English, not Chinese, so they had no idea what they were reading.