The purpose of this book is to introduce some main backgrounds of China's history. So, what is the main thread of China history?

The first clue is that Chinese civilization is the only uninterrupted civilization in the world.

The second development thread: Chinese civilization is a very precocious civilization.

The third cable is characterized by drastic changes at both ends and continuous circulation in the middle.

The fourth thread is that, in the middle of the two great changes, China's politics and society kept circulating on the one hand, and evolved in a fixed direction on the other.

The fifth main line is the relationship between the former and the central government.