flying into PEK from SEA, to KHN, flights are delta to China eastern,all in T2. what do i do

I am flying into PEK from SEA on delta airlines landing in terminal 2. I will have a 2:20 layover. leaving from terminal 2 on china eastern airlines. Being that I am going international to domestic flight will I need to collect and then recheck my baggage? I am flying in and out of the same terminal so I am a little confused. Also will I have enough time?