Known as "the first creation of photography in China", where was the photo taken and what was the subject?

Liang Shitai once took some photos of scenery and still life in Beijing. Such as "the throne in the Chengguang Hall of Beihai" and "the glass archway in the palace". The "memorial" he photographed was marked with the words "Liang Jingzhao in the 13th year of Guangxu". This shows that it was not easy to take pictures in the palace at that time. He took the paper with reverence and awe. These old photos were not made public until more than 40 years later, and they were signed and published in Beiyang Pictorial. Known as "precious", "rare and extraordinary" and "the first creation of photography in China".