Transfer in Beijing airport: how is the ckeck-in and baggage transfer

According to the international to international transfer, you don't need to collect the baggage and recheck them at PEK.

But I have one ticketnummer for the flight to Beijing and and another ticketnummer for the flight vom Beijing to Pyongyang. When i cannnot check-in in Frankfurt for both flys, than the baggage can also not check throw. Have I to take my baggage in Beijing from the baggage claim and then go into the departure hall to check-in for the flight to northkorea?, than i have also to go to the passportcontrol?
Between both flights is only two hours.

Is your flight international to international? If so, the procedure is: Arrive at the International Arrival Level at 3F of T3-E → proceed with transfer procedures → pass through the Transit Inspection in special passage in the east or west → take special elevator downstairs to International Departure Level at 2F of T3-E → accept Security Inspection in the special passage → go through the customs sample check of hand baggage if necessary (confirm with your air company)→ Waiting & Boarding.