In a narrow sense, what are the characteristics of China ancient calligraphy documents?

The brushwork is full, rich and simple.

Throughout history, the laws of art are summarized. The development and perfection of calligraphy literature can be divided into four periods:

The first period can be called the embryonic period of calligraphy documents or the period of ancient Chinese characters. It began with the creation of characters by Cangjie, a historian of the Yellow Emperor, and ended with the unification of the six countries by Qin Shihuang, and seal script became the unified standard writing in China.

The second period, from the birth of Lishu to the Han, Wei and Six Dynasties, is the awakening and formation period of China's calligraphy from practicality to art.

The third period is the maturity of calligraphy, which can also be called the heyday of calligraphy-Tang and Five Dynasties.

The fourth period is the Song, Yuan, Ming and Qing Dynasties, which is the period when calligraphy art grows and develops in the struggle.