I want to spend two days in Lanzhou. Which is better, McKee or Kongtong Mountain? (urgent)

Mackey is a cave. In Tianshui, the scenery of Ren Xian Cliff nearby is very good. Kongtong Mountain is in Pingliang. I haven't been there, but I heard that the ticket price has gone up a lot, reaching more than 100. It takes a shorter time to go to Tianshui by train, and there are many beautiful women in Tianshui! ! Hehe, but these two mountains are far from the city, so you have to take a bus when you get off!