There were many outstanding scientific works in ancient China, some of which were famous: The Book of Changes was one of China's oldest philosophical classics and an important natural science work. It described the changing laws of various things in nature and had far-reaching significance for guiding people in scientific research and application. Tao Te Ching was one of the Taoist classics and one of the most important philosophical works in ancient China. It raised many views about nature and the universe, which had important implications for understanding the relationship between humans and nature. 3. The Analects of Confucius, one of the Confucian classics and one of the most important cultural works in ancient China. It recorded the words, deeds, and thoughts of Confucius and his disciples. It contained a lot of wisdom and views on natural science, ethics, morality, and governance. Mozi was one of the classics of Mohism and one of the most important natural science works in ancient China. It described Mozi's observation and research on nature and put forward many theories and perspectives on physics, chemistry, biology, and so on. 5. Da Xue: It is one of the Confucian classics and one of the most important philosophical works in ancient China. It put forward the idea of "understanding things to obtain knowledge", which was to obtain and improve knowledge through studying nature and human society. These are just a small part of the many scientific works in ancient China. They have made important contributions to the development of ancient Chinese and world science.