Yan Zhenqing (709-785), a native of Anren, Shaanxi Province, was a scholar of Kaiyuan, the official department minister, and was called Gong Lu. In 768, the third year of the Tang Dynasty, Yan Zhenqing went to Fuzhou to study history. He has visited Magu Mountain many times and felt a lot about the beautiful and mysterious colors here. In April of the sixth year of Dali (77 1), I climbed Magu Mountain again and visited Xiantan Lake. At that time, this book was very popular. He wrote a fairy story about the place where Magu Mountain met Wang Ping, an immortal, at his home in Cai Jing, Magu Mountain, and a regular script tablet written by Deng Ziyang, a Taoist priest in Magu Mountain, "There is an Magu Mountain Xiantan in Nancheng County, Fuzhou in Tang Dynasty" (hereinafter referred to as "Magu Mountain Xiantan"). The full text of more than 900 words, vigorous brushwork, vigorous pen, full layout, magnificent, was praised by calligraphers of all ages as "the first regular script in the world."