List five famous calligraphers in ancient China and talk about their characteristics.

There were many famous calligraphers in ancient China, among which Wang Xizhi, Ou Yangxun, Yan Zhenqing, Mi Fei and Su Shi were the most outstanding.

Wang Xizhi, known as the "sage of books", was born in the Jin Dynasty. He began to practice calligraphy at the age of seven, and later created a new style on the basis of Qin and Han calligraphy. His works are peaceful and natural, and he is a calligrapher who links the past with the future.

Ou Yangxun, a native of Tang Dynasty, was influenced by Wang Xizhi of Jin Dynasty. He absorbed the advantages of inscriptions in the Northern Dynasties and other calligraphers in the Tang Dynasty, and formed a "bold" and "steady" calligraphy style.

Yan Zhenqing is also a native of the Tang Dynasty. His calligraphy is vigorous and innovative. Liu Gongquan was a calligrapher as famous as Yan Zhenqing in Tang Dynasty. His works are greatly influenced by Wang Xizhi and Yan Zhenqing, and their styles are exquisite and beautiful.

Su Shi was a great writer in the Song Dynasty, with profound knowledge and vigorous and bold calligraphy. He did not stick to the rules of the previous generation of calligraphers and advocated "impermanence of calligraphy" At the same time, he also advocated that only knowledgeable people can make calligraphy progress.

Mi Fei studied calligraphy the most in his life, and his greatest achievement was running script.