Sima Rui, the king of Langya, and his best friend Wang Dao, experienced the ups and downs of the country and went south to establish a new political power, which extended the political and cultural roots of the Central Plains. The south ushered in a new great development, and the civilizations of the north and the south were deeply integrated. From this, the history of ChinaAdjusted the focus of writingMo Zhai, who was born as a commoner, has a passion for mechanical technology.He has a love and study of art and natural science that are different from ordinary people.He was once a follower of Confucius, but gradually became a critic of Confucianism.In Mozi’s case, Confucianism’s gaudy outlookThe idea is not conducive to social development. Only sophisticated instruments that can be widely used can better meet the needs of the times.