Does Qinghai belong to Gansu Province?

No, Qinghai is an independent province.

According to Baidu Encyclopedia, Qinghai Province does not belong to Gansu. Qinghai and Gansu are independent provinces, but Qinghai and Gansu are bordered on the ground, so it is easy to be confused.

Qinghai Province, referred to as "Qing" for short, is the provincial administrative region of People's Republic of China (PRC), with Xining as the capital; It is located in the northwest inland of China, bordering Gansu Province in the north and east, Xinjiang Uygur Autonomous Region in the northwest, Xizang Autonomous Region in the south and southwest, and Sichuan Province in the southeast. The terrain is generally high in the west and low in the east, high in the north and south and low in the middle. It is located in the Qinghai-Tibet region and has four geographical divisions.