On July 24, 2017. The reporter captured the change in the July 1 glacier that is located in the hinterland of the Qilian mountains: compared with two years ago, the ice tongue had shrunk significantly. The result of comparing two catalogings of Glaciers in the Qilian Mountains show that in the past 50 years, 509 glaciers in the Qilian Mountains have disappeared and the area has decreased by 420 square kilometers.