Ou Feng: His calligraphy achievements are based on regular script, with bold brushwork and unique structure, which is called "Ou Feng" by later generations. Originally from Han Li, he was vigorous and rigorous in statutes. He sees risks in plain sight, with elegant composition, interspersed strokes and proper arrangement. Regular script is the Ming Dynasty of Liquan in Jiucheng Palace, and the most famous running scripts are Meng Diantie and Hans Zhang Tie. All other calligraphy styles are poor. Zhang Huaiguan said in the Book of Broken Tang Dynasty: "The eight forms of inquiry are perfect, and the brushwork is dangerous and energetic. The Indian style is particularly fine, flying white, as strict as the ancients. Like a dragon and snake fighting, the clouds are light and the wind is light. The wind whirls and thunders, and exercise is like a god. The decay of the true line comes from the big order, so don't become one. As dense as an armory spear and halberd, Shen Feng is stricter than wise water and less polished than Shinan. Its cursive script is circulated, which can be regarded as two kings. It can be used as a dynamic color, but it scares him to jump, does not avoid danger, and hurts elegance. "
Yan Ti: His regular script is contrary to the calligraphy style of the early Tang Dynasty. With the pen of seal script, it turns thin and hard into vigorous and vigorous, with a broad structure, great momentum, strong bones and awe-inspiring, dignified and majestic. His running script is rich and vigorous, and this style also reflects the prosperous style of the Tang Dynasty empire, which conforms to his noble personality and is a typical example of the perfect combination of calligraphy beauty and personality beauty. His calligraphy style is called "Yan Ti", which is also called "Yan Liu" with Liu Gongquan, and has the reputation of "Yan Liu Jin Gu". Yan Zhenqing's brushwork is even and hidden, just inside and warm outside, and his writing is tortuous, round and powerful.