What should I wear to Seda and Daocheng Aden in July, and go to see the scenery in July?

In July, I still have to wear a thin down jacket or fleece suit when I go to Daocheng Aden and Seda.

Attachment: On July 30th, 2007,2065438, I took photos of tourists' clothes (about 4500m above sea level) on the way from Luo Rong Niuchang (4 180m above sea level) to Milk Sea (4600m above sea level) and Wuse Sea (4700m above sea level).

I took a picture of Yangmaiyong Snow Mountain in the colorful sea:

On August 20 17 1 2, I visited Seda Larong Wuming Buddhist College.