Why did the high-speed train from Zhangye to Xining stop?

There are two main reasons for the suspension of the Zhangye-Xining high-speed railway. First of all, passenger flow cannot support high-speed rail operation. During the period of 2020-202 1, due to epidemic situation and other reasons, many high-speed trains and ordinary-speed trains appeared empty carriages, resulting in a large number of vehicles stopping. Secondly, long high-speed rail lines will also bring security risks. Too few freight trains pull goods will also lead to uneconomical. However, from September 1 day, 2022, the Lan Xin high-speed railway from Zhangye to Xining resumed operation.