The full name of "Magu Xiantan" is "Magu Mountain Xiantan in Nancheng County, Fuzhou in Tang Dynasty", which is the representative work of Yan Zhenqing's regular script.

The monument was erected in the sixth year of the Tang Dynasty (AD 77 1), and was later destroyed by lightning. It has a copy of the original extension. The inscription is vigorous and simple, with strong bone strength, the change of line thickness tends to be gentle, and the strokes are less tortuous. When using a pen, there is a "silkworm head swallow tail" with more strokes. Because of its thick lines, in order to leave blank space in the middle palace of the word and avoid crowding, it has to try its best to spread around, and the extended writing method has been pushed to the extreme.

The monument used to be in Linchuan, Jiangxi, and was destroyed by fire next season. Regular script, 90 1 word in total, according to the engraved and mounted versions handed down from generation to generation.

Large font extended data. The word diameter is about 5 cm, and there are two kinds of rare books: one is the reprint of Ming Fan Yi Wang Zhu Zhubin, and the calligraphy is strictly purged (in the Palace Museum in Beijing); The second one is a photocopy of Dai Ba in Qing Dynasty (collected by Shanghai Museum), with clear stippling and few scattered points.

Chinese character books and rubbings. The word diameter is nearly 2 cm. Liu Yuangang's Loyalty Hall Post, which was first seen in the Southern Song Dynasty, is now in the Zhejiang Provincial Museum. Historically, the records written by epitaphs are all written in large and small fonts, not in Chinese characters. During the Yuan and Ming Dynasties, it was not taken seriously, and there were many kinds of lettering in the Qing Dynasty, which was not enough.

Fine print, rubbings. The word diameter is about 1 cm. 90 1 word every 46 lines. According to Zhang Yansheng's Record of Rare Books, there was no fine print in the Song Dynasty. In the Ming Dynasty, the engraving of Stop Cloud Pavilion began to generate income, and the engraving in Cheng Nan was the most expensive in the world. The earliest rubbings were collected by Guo Ruoyu in Shanghai, with complete stones and clear words, and entered the Palace Museum in Beijing.