What is the relationship between Qianxi and Bijie?

Trusteeship relationship. According to the website of China Municipal People's Government, Qianxi City is directly under the jurisdiction of Guizhou Province, and Bijie City is in charge, so the two cities are in charge. Bijie City, also known as Bi Cheng, is a prefecture-level city under the jurisdiction of Guizhou Province. It is located in the northwest of Guizhou, one of the Golden Triangle in Guizhou, the hinterland of Wumeng Mountain, and the crossroads of Sichuan, Yunnan and Guizhou.