Has the plane from Qingdao to Lanzhou stopped?

The plane from Qingdao to Lanzhou stopped. According to relevant information, the four flights cancelled at Qingdao Airport were: Shandong Airlines 4683/4 (Qingdao = Datong = Lanzhou). Shandong Airlines 8757/8 (Xiamen = Datong = Harbin). United Airlines 2929/30 (Daxing = Datong = Yinchuan). Dongfang 262 1/2 (Guangzhou = Datong = Guangzhou).