What are the representative works of calligraphers Yan Zhenqing and Liu Gongquan?

Yan Zhenqing wrote many monuments in his life, which have been passed down to this day: many pagodas, dignified and dense in structure, beautiful and charming; "Dong Fangshuo painted a monument to praise" with a strong Qingyuan style; "The Inscription of the Golden King" is dignified and vigorous; "Zang Huaike Monument" is magnificent and vigorous; "Over the cup" is graceful and smooth; Ma Gu Xian Tan Ji is vigorous and solemn, with exquisite structure and full of charm. "Da Tang Fu", carved on a cliff, is the largest regular script in Yan Zhenqing, and its calligraphy is square and smooth, showing no bones and muscles. Song Dynasty Monument, also known as Song Guangping Monument, is open and full of vitality. "Eight official pavilions report good deeds", with strict weather; Yuan Jie Bei is vigorous and far-reaching; The book of manna seeds focuses on harmony; Li Bei's calligraphy is vigorous, but the strokes are fine, which is different from other tablets.

Liu Gongquan (778-865), a famous calligrapher in Tang Dynasty, Han nationality, was born in Jingzhao Garden (now Yaozhou District, Tongchuan City, Shaanxi Province). Official to the prince, known as "Liu". Liu Gongquan's calligraphy is famous for regular script, which is as famous as Yan Zhenqing, and is called Yan Liu. Wang Xizhi, a beginner in calligraphy, later visited famous calligraphers in the Tang Dynasty and thought that Yan Zhenqing and his calligraphy were the best, so he absorbed the strengths of Yan and Ou, and formed his own Liu style between the charm of Jin people and the graceful and unconstrained style of Yan's calligraphy, which was famous for its strength and strength, and later generations had the reputation of "Yan Gu". He wrote many works in his life, mainly including Hui Yuan's View of the Bell Tower in the Tang Dynasty, Diamond Sutra Engraving, Xuanta Monument, Su Feng Monument, Shence Army Monument and so on. In addition, there are ink marks such as "Zhao Meng Post" and "Pear Post and Postscript from Wang Xianzhi".