This summer, I will travelling air China (Kathmandu-Chengdu-Beijin-Ulaanbaatar).
Before arriving in Mongolia, I will make 2 transits in China (Chengdu and Beijin). My trip (Kathmandu to Ulaanbaatar) will take less than 24 hres. Do I need a visa for theese 2 transits in China. I think, between Kathmandu and Chengdu, my plane make a stop at Lahssa, but I stay in the plane for the contunuation to Chengdu.