Yan Zhenqing is a famous calligrapher in the Tang Dynasty, and his calligraphy style is unique, so he is known as "Lu Gong Shu". This is because Yan Zhenqing's calligraphy not only has the charm of the ancients, but also has its own innovation, which is deeply loved by people. Yan Zhenqing's calligraphy works are called "Yan Ti", which is one of the important schools in the history of China's calligraphy.