The origin of European hard pen calligraphy. The more detailed, the better.

Ou Yangxun (557-64 1) was born in Linxiang, Tanzhou (now Changsha, Hunan). Letter book Father Zhou was convicted of treason and raised by General Manager Jiang after hiding. In the early Sui Dynasty, he was a doctor in Taichang and a minister in Tang Gaozu. He used to be a doctor in Yin Qing Guanglu, a prince, a bachelor in museum and a duke of Bohai.

His calligraphy produced two kings and Liu Min, a doctor of the Northern Qi Dynasty, and he led Li Fa, bold and sharp. The Sui stele in the early Tang Dynasty is the most square and sharp, which is beautiful and elegant, strict in statutes and unique, and is called "European style" internationally. His books have a great influence on later generations and are valued by the world. Together with Yu Shinan, Chu Suiliang and Xue Ji, they are called the four great calligraphers in the early Tang Dynasty, and they are the representatives of "Tang people respect the law".