Library

Since the beginning of human civilization, language has been transformed into a symbol, and knotting ropes to record events has officially begun history. History has formed a system, and the system has organized writing. The door to first-level civilization has thus begun! Words shine on the stage of history, and the world becomes dazzling because of it. The advancement of science and technology has promoted the exploration and development of pi. Human beings have left the land and begun to explore more distant deep space. The great voyage of the second-level civilization has set sail! However, for the third-level civilization, the so-called great voyage is more like a fish in a pond, which cannot be escaped or watched!