What are all the interesting cultural phenomena in China?

Throughout the history of China, there seems to be a huge hidden mystery. China has the longest and most complete history of letters in the world. Although, like other ancient peoples, the Chinese canonical books have experienced many destructions in the 2,500 years after the Spring and Autumn Period, however, starting from the Song Dynasty, a mysterious and interesting phenomenon emerged in Chinese history - the "Shengshi Shuishu", in which every dynasty, except for the Yuan Dynasty, which also has not been totally With the exception of the Yuan Dynasty, which was not fully Sinicized even at the end, each dynasty left behind an encyclopedia that comprehensively summarized the wisdom of its predecessors.