Who put forward the view that man and nature live in harmony? It was put forward by Zhuangzi, and it is a theory about the relationship between man and nature in ancient philosophy. It means that heaven and man are inseparable, emphasizing the unity of heaven and man, nature and man-made. How to achieve the unity of heaven and man: do things with a positive and optimistic attitude. With a good attitude, everything is fine. Everything you do makes people feel heartfelt, and that's who you really are.