Transit visa. Hi i am a Nepalese citizen.

I flying round trip with China Eastern Airlines from San Francisco, USA to Nepal. I have 2 stops in china. One short stop in Qingdao ( I dont have to change the flight on this stop) and another stop is in Kunming ( its 15 hours and 5 minutes overnight layover.)

And i have 2 stops while returning from Nepal to San Francisco, USA. One stop at Kunming ( 10 hours and 40 minutes overnight layover) and another stop is in Qingdao ( I don't have to change the flight.)

On my ticket it's showing only one stop at Kunming on both ways. Stop at Qingdao is a hidden stop.
In this situation do I require to get a chinese visa either ways?