Which cities in China have the strongest ultraviolet rays and which cities have the weakest ultraviolet rays?

Which cities in China have the strongest ultraviolet rays and which cities have the weakest ultraviolet rays;

Lhasa, Yunnan, Guangxi and Guizhou have the strongest ultraviolet rays. The ultraviolet rays in Chengdu and Chongqing are the weakest.

Which cities in China have the strongest ultraviolet rays and which cities have the weakest ultraviolet rays;

The relatively low level in the southeast of the mountainous area around Sichuan Basin is conducive to the entry of water vapor, while the relatively high level in the northwest mountainous area is not conducive to the loss of water vapor, resulting in high air humidity, rainy and foggy weather, which is the area with the least annual sunshine time and the weakest ultraviolet rays in China. Because of its high altitude, the Qinghai-Tibet Plateau has relatively dry and thin air, strong solar radiation and the strongest ultraviolet rays.

What to eat is more resistant to ultraviolet rays:

Eat more fresh and dark vegetables: carrots, eggplant and broccoli.

Do not eat irritating food: Chili, onion and garlic, seafood.

Supplement the intake of some trace elements: copper, zinc and iron.

Eat more black food: black rice, black beans, black fungus and black grapes.

Eat less foods rich in vitamin C, such as oranges, oranges and watermelons.