When did the situation of photography change slightly in China, and why?

In the early days when photography was introduced to China, it was once regarded as "strange skill and cunning" and "heresy" by the rulers of Qing Dynasty. Therefore, photography is strictly prohibited in the Forbidden City, and it is difficult for photographic equipment and photographers to enter the palace. It was not until the beginning of the 20th century that the situation changed slightly. Empress Dowager Cixi was attracted by the cleverness of photography in her later years and used it for fun. So, a man named Yu Xunling was called into the palace to take pictures of Cixi.