Is Yuanmou’s UV rays strong?

Strong ultraviolet rays. Due to the hot weather in Yuanmou and its highest altitude of 2836 meters, ultraviolet rays are also very strong. Ultraviolet rays are a general term for radiation with frequencies from 750THz to 30PHz in the electromagnetic spectrum, corresponding to wavelengths from 400nm to 10nm in vacuum, and cannot cause human vision. It is invisible light with a higher frequency than blue-violet light.