I would like to take advantage of the 72h China transit visa at Beijing Capital airport and city.
My confusion concerns the term "interline ticket" in the regulations. To me, that sounds like I have to book the flight into and out of Beijing at one airline carrier on the same booking reference - which according to my attempts is not to easy, especially since China Eastern doesn't offer multi-city bookings (at least online).
Is my interpretation correct? If so, which carriers are the usual suspects to offer bookings for this (eg. HKG-PEK, PEK-ICN)?