Thailand to Bejing with stop in Kunming

Hey there!
We want to make a stop fpr 6 days in Bejing. We are in the moment in Thailand in Chiang Mai. We plan to fly to Bejing from there but not directly, there is a stop at Kunming before. Is the new 6 day transit visa than working with us? will they let us pass to Bejing in Kunming. We fly back to Germany than It is the same airline:China Eastern and the stop in Kunming is for about 2:35 h.