Detail of flight path from Dhaka to Beijing Via Kunmimg

I will travel to Beijing from Dhaka through Kunming by China Eastern Airlines on October 29. What i have to do at Kunming airport: Change the plane? immigration? change the airport or terminal? International to domestic one? Is there food court in the Kunming airport?

I'll reach Beijing at 23:10 hrs. What will be the terminal at Beijing Airport?? I'll stay at a Beijing Hotel...how far it is from Beijing airport and how can i go there ???