Should the wiki be updated as Xiamen has been added to the list of airports that participates in the 72 hour visa waiver.

My question is about the "not landing in another Chinese airport first" rule.

AMS-PEK-(separate aircraft/flight number) to Xian/destination
Xian-PEK-ICN/flights two days later
SYD-PEK-XMN-AMS

Since I clear immigration in PEK, can I still continue on domestic flight to Xian? Then I leave back again from PEK less than 72 hours later to another country. Upon return flight, I repeat same process transiting via PEK to XMN and then out to AMS. All are separate flights. I am confused if the not stopping in another Chinese city rule first means if you stay on the same plane without getting out to let other pax off/on or if you actually change planes (in the latter's case, you would clear immigration in that city). Any thoughts?