Yan Zhenqing (August 23, 709 -784), born in Wannian, Jingzhao (now Xi 'an, Shaanxi), was a famous official and calligrapher in the Tang Dynasty. He and Liu Gongquan are called "Yan Liu", and Zhao Mengfu, Liu Gongquan and Ou Yangxun are also called "four masters of regular script". He once offended the powerful minister and was demoted to the plains satrap. When Tang Daizong was an official, he went to the official department to be an official, became a prince and a surname, and named him Duke Lu. Strangled in 784, posthumous title Stuart, posthumous title "Wen". He has exquisite calligraphy and is good at writing. Chu Suiliang was a beginner and later studied under Zhang Xu. He got his brushwork and created "Yan Ti" regular script, which had a great influence on later generations. He is also good at poetry, including,, and so on. Yan Lu Gong Ji was compiled by Song people.