Lanzhou is definitely the best, but it is uneven. Good is very good, bad is very good. The education level in Jiayuguan \ Jinchang is relatively good, because the finance in these areas is good, and the difference in other areas in the province is not serious. The hardware in Hexi is better than that in Hedong.

The better county should be Huining county, the famous champion county.

Yongchang county is also good. Others don't seem to have heard much about it.