How many contracted photographers are there in chinese national geography?

From June 5438 to June 2022 10, Xu, Yuan, Hao Pei, the editor-in-chief of the magazine's new media, and two specially invited experts completed a week-long tour of Gannan and Qinghai. For readers of chinese national geography, the names of these seven photographers should be familiar. They can be regarded as the benchmark figures of geographic photography in China, and they are also role models for young photographers.

Photographers are people who use cameras, photographic films, light sources and modeling techniques to shoot portraits, landscapes, products and production or life image information indoors and outdoors.