Flying SFO-PEK-CAN

So you will arrive in T3 and fly away from T2? Then you should pick up luggage and finish the transfer procedure in T3. Then take the free shuttle bus to T2. It is no need to leave T3, and it is not allowed either.

I do not know if I need to go to T2 for CAN flight. It's a Airchina flight 1329. I do not understand your last sentence - "It is no need to leave T3, and it is not allowed either". Obviously, T3 (Terminal 3) is different than T2 (Terminal 2). I understand I need to take the free shuttle bus to go between the terminals.

Oh, since you will use Air China, the flight will leave from T3. Then you don't need to go to T2.

The last sentence in last post: I meant that it is not necessary to leave the building of T3 on your own. Free shuttle bus between the terminals are very convenient.

Thanks for the info Brain. It was very helpful. I just came back from China and I did not have to change the Terminal. My baggage went to CAN directly so I did not need to pick that up in PEK.