2. Evolution and origin.

3. Past facts.

The problem of history is to discover the real past constantly, to speak with materials, and how people can become a negotiable problem in reality. History is an extension. History is the inheritance, accumulation and expansion of culture and the track of human civilization.

The evolution of human history in society is called "history". Generally refers to things that happen at regular intervals.

History, or simply history, refers to the systematic recording, interpretation and study of past events and behaviors of human society. History can provide modern people with an understanding of the past as a reference for future actions. Together with ethics, philosophy and art, it is an important achievement of human spiritual civilization. The second meaning of history is to record and study past events, which is also called "historiography" or "historiography" for short.

History is divided into official history and unofficial history.

Official history is the history of government editors, which is generally more authoritative and credible.

A legendary history beyond the official history of unofficial history.