Yan Zhenqing, (709--785), named Qingchen, was born in Jingzhao ten thousand years ago, and his ancestral home is Linyi, Langya, Tang Dynasty (now Linyi, Shandong). Kaiyuan Jinshi. During the Anshi Rebellion, he fought against thieves for meritorious service. He entered Beijing and served successively as Minister of the Ministry of Personnel, Prince and Grand Master, and was granted the title of Founding Duke of Lu County, so he was also known as Yan Lu Gong in the world. During the reign of Emperor Dezong, Li Xilie rebelled. He put the country first and went to the enemy camp in person. He showed his righteousness and was eventually hanged by Li Xilie at the age of 77. Dezong's edict said: "Innate talent, outstanding public loyalty, traveling in four dynasties, and steadfast in his determination." In the history of calligraphy, he is the most accomplished and influential calligrapher after the two kings. His calligraphy was originally written by Zhang Xu, the four masters of the early Tang Dynasty, and later he collected and gained widely. He changed the ancient method and developed his own "Yan style" that is square, solemn, majestic, sincere, powerful, and majestic. It had a huge impact on future generations. It is said that there are 138 kinds of his calligraphy works. Regular scripts include "Duobao Pagoda Stele", "Magu Immortal Altar Story", etc., which are highly personalized calligraphy styles, such as "Jing Qing presses his sword, Fan Kuai holds his shield, Vajra's eyes are angry, and the strongman shakes his fist." Cursive script includes "Sacrifice to Nephew" "Manuscript of Fighting for a Seat", "Tie of General Pei", "Book of Self-Report", etc. Among them, "Manuscript of Memorial to My Nephew" is the highest artistic state entered in a state of extreme grief and indignation, and is known as "The Second Running Script in the World" ". Mi Fu's "History of Calligraphy": ""The Book of Fighting for Seats" has the spirit of seal script, and is the first in Yan calligraphy. The words are connected and related, and they move strangely and come from accidents." He has an upright nature, is sincere and honest, and has a sense of justice. He is not inferior to the powerful, he is willing to flatter others, and he is famous for his righteousness and righteousness. His loyal and heroic deeds throughout his life enhanced his status in the calligraphy community. When Yan Zhenqing was young, his family was poor and lacked paper and pen, so he practiced calligraphy on the wall with a pen dipped in loess and water. He first studied under Chu Suiliang, and later under Zhang Xu. He also absorbed the characteristics of the four schools of thought in the early Tang Dynasty, and incorporated the calligraphy style of seal script and Northern Wei Dynasty into his own style. It was contrary to the style of calligraphy in the early Tang Dynasty, and transformed from thin and hard to plump and powerful, with a broad and majestic structure. His bones are strong and his spirit is awe-inspiring, and he is known as "Yan Ti". Yan style established his immortal status in regular script for thousands of years. Yan Zhenqing is one of the most influential calligraphy masters in the history of Chinese calligraphy. His "Yan body" is called "Yan Liu" together with Liu Gongquan, and he is known as "Yan Jin Liu Gu".