1. Insufficient passenger flow: insufficient passenger flow between Taian and Yinchuan. In order to save costs and improve efficiency, the railway company will suspend the operation of Tai 'an Line and Yinchuan Line.

2. Line adjustment: The railway company will adjust the line according to passenger flow and market demand. The operating costs of Taian and Yinchuan lines are higher than the income, and the operation will be suspended.