Chengdu is closer to Qamdo. Qamdo is located in the east of Tibet, at the throat of the border between Tibet and Sichuan, Qinghai, and Yunnan. It is a necessary place for the Sichuan-Tibet Highway and Yunnan-Tibet Highway. <br/>However, regardless of whether you are connecting in Chengdu or Xi'an, the total flight time of the two flights is about the same, and the second flight takes the next day. It is recommended to take the air ticket price as the main factor for consideration. It is probably more affordable to check the transfer in Xi'an. <br/>Want to adopt!