When did the writing brush begin to use calligraphy in simple reading to become the basic skill of literati?

Qin dynasty

Brush has played an important role in the formation of calligraphy art. As far as the richness of writing effect is concerned, brush is a creative tool of calligraphy art that can't be replaced by any other tool so far.

Brush is a traditional writing tool originated in China, and it has gradually become a traditional painting tool. The writing brush was invented by the ancient people in China in their production practice. With the continuous development of human society, the industrious and intelligent Chinese nation constantly sums up experience, preserves the essence, abandons the dross and dares to explore and innovate. For thousands of years, it has made outstanding contributions to the creation of the splendid culture of the Chinese nation and the promotion of cultural exchanges between the Chinese nation and all ethnic groups in the world.