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 early Tang Dynasty, and also adopted seal script and official script from the Northern Wei Dynasty. When Yan Zhenqing was young, his family was poor and lacked paper and pen, so he practiced calligraphy on the wall with his 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". The style of writing has its own style, which is contrary to the style of calligraphy in the early Tang Dynasty. It transforms from thin and hard to plump and vigorous, with a broad and majestic structure, strong bones and awe-inspiring spirit, which 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".