more than 24 hour stay. In this case, do we need multiple tour visa? or single one?

schedule of the way to korea is:

india(kolkata) -> china (kunming) -> china (Qingdao) -> korea
arrival 05:15 (22/01) arrival 00:20(23/01) arrival 10:55 (23/01)

departure 19:45(22/01) departure 08:35(23/01)

we lay over in china for more than 24 hours, in case that we don't need to tour city (only stay in china airport) , Do we need get chinese transit type?