Photo taken on August 12, 2021, shows the splendid Milky Way arches overhead the Lenghu site in northwest China's Qinghai Province. (Photos courtesy of Hong Wenhan)

Photo shows the star trails taken by a mobile phone at the Lenghu site in northwest China's Qinghai Province.

A panoramic view of the Lenghu site after the snow in the winter of 2020 in northwest China's Qinghai Province.

Photo taken on December 20, 2020, shows NAOC members work at the Lenghu site in northwest China's Qinghai Province.