How old are the middle-aged people in the Book of Changes?

33 to 48 years old, middle age. Middle-aged people are the backbone of society, shouldering the responsibilities of the state and society, and are the main force of various departments and industries. They have heavy tasks, great responsibilities, high expectations for career achievements, diligence and responsibility, and long-term high-intensity mental pressure. This situation seriously threatens the physical and mental health of middle-aged people, especially middle-aged intellectuals.

Everything originated from the Book of Changes, which is the general source of China culture and the beginning of a hundred schools of thought, so it is called the beginning of the group classics. The Book of Changes, known as the "head of ten thousand classics", is a book that demonstrates and describes the operation law of things based on the dualism of yin and yang. It classifies the characters of all things in the world and heavenly stems and earthly branches's Five Elements Theory, even accurate enough to make a more accurate prediction of the future development of things.

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