How to book tickets online for the Dingxi bus from Xining to Xining?

What is the Dunche... If it is a ticket from Xining to Dingxi, you can book a high-speed train ticket with Ctrip~

Hello, you can book train tickets and high-speed rail on Ctrip. Open the homepage of Ctrip and there is a train ticket and air ticket. After clicking on it, you can only choose bullet trains or high-speed rail, and you can book it. Thank you. Please accept it.