Yan Zhenqing (August 23, 709-784), whose real name was Chen Qing, nicknamed Xianmenzi, alias Fang Ying, was born in Jingzhao Wanzhao (now Xi, Shaanxi), and his ancestral home was Langjia Linyi (now Zhumanliu Village, Fangcheng Town, lanshan district, Linyi, Shandong). Yan Shigu V was a famous minister and outstanding calligrapher in Tang Dynasty.
The early Tang Dynasty, from the first year of Emperor Gaozu's Wude (6 18) to the early year of Xuanzong's Kaiyuan (7 13), lasted about one hundred years.
The prosperous Tang Dynasty lasted about fifty years from the early years of Xuanzong Kaiyuan (7 13) to the early years of Daizong Dali (766).
From the first year of Dali in Central Tang Daizong (766) to the ninth year of Emperor Wenzong Taihe (835), it was about seventy years.
The late Tang Dynasty refers to the eighty years after the literary school Yamato (828? 907) Time