What is the income of photographers in the photography copyright industry as contributors?

At present, this industry is rising in China, and people pay more and more attention to the formal copyright authorization of video, audio and pictures. Photographers will certainly be more respected than before and can realize their commercial value through continuous creation. For example, Luohai, a genuine photo library in China, is surrounded by many photographers and friends who slowly accumulate their own pictures after signing contracts and earn a certain amount of money every month. They use the manuscript fee to accumulate their own travel expenses, change equipment, and even become full-time contributors.