There are many books that improve self-cultivation and knowledge. The following are a few that I think are more valuable: The Analects of Confucius: This is one of the classic works of ancient China. It contains the words, deeds, and thoughts of Confucius and his disciples. This book can help us understand ancient Chinese culture and moral values, and at the same time, it can also improve our self-cultivation and thinking ability. 2. Tao Te Ching: This is one of the classic works of Taoism. It talks about the nature and laws of the universe and life. This book can help us understand Taoism and improve our self-cultivation and moral standards. 3. Da Xue: This is one of the classic works of Confucianism. It talks about how to become a virtuous person and the wisdom of life. This book can help us understand Confucianism and improve our self-cultivation and thinking ability. Zi Zhi Tong Jian: This is one of the historical works of ancient China, including the history of China from 403 B.C. to 959 A.D. This book can help us understand Chinese history and culture, and also improve our self-cultivation and historical knowledge. 5 Capital: This is one of the representative works of Karl Marks, which talks about the development and contradictions of capitalist society. This book can help us understand the nature and laws of capitalist society, and at the same time, it can also improve our cultivation and economic knowledge.