Who is the author of Zhouyi?

The author of Zhouyi is Zhou Wen Wang Jichang.

The words "Heaven is powerful, and the gentleman strives for self-improvement" and "The terrain is vast, and the gentleman carries things with morality" mean that the movement of Heaven (that is, nature) is strong and healthy. Accordingly, a gentleman should behave like the sky, constantly strive for self-improvement, be resolute and resolute, and never stop; The potential of the earth is thick and slippery, and the gentleman is tolerant. A gentleman should run like Tianyu, indomitable even if he is displaced; If you are a gentleman, the measurement of objects should be like the earth, and nothing can't be carried.