You can come to the optical shop near Daqing Petroleum Institute, which is generally cheaper. Because students earn money, the price is lower. I have also equipped mirrors in some big stores, such as Akihito and Laojing, and they still look like that after wearing them for more than 700 years.

I just saw that you want to let the tribal tiger area, hehe, it won't be long before you come back to Xincun.