Originally Posted by
atflyer
Of course, it is not clear how you do PEK-TPE in the first itinerary filled in. Fill in SFO-AMS-PEK and SZX-TPE. Again, it all boils down if China sees an exit to TPE as an exit to a 3rd country. This obviously is the case for any regular country, I strongly believe for Hong Kong and Macau too, but not sure about Taiwan.
This should be in the TWOV thread in the China forum. For the purposes of immigration and TWOV, Taiwan, HK, and Macau are considered 3rd countries.