Calligrapher of Tang Dynasty. During Zhenguan (627-649), he served as the enshrined calligrapher of the Imperial Household and directed the Hongwen Hall. In the thirteenth year of Zhenguan's reign, the original "Le Yi Lun" was published and ordered to be copied by Chengsu, and given to six people including Changsun Wuji, Fang Xuanling, Gao Shilian, Zhu Junji, Wei Zheng and Yang Shidao. The writing style is exquisite and all regular rules are prepared. "The handed-down copy (Shenlong version) of Wang Xizhi's "Lanting Preface" is generally called Feng Chengsu's hand-written copy after Guo Tianxi of the Yuan Dynasty. The broken edges, broken pens, knotted characters, and ink lines in the post are all exquisite.

Appreciation of works:


The front paper of this volume has 13 lines, with looser spacing, and the back paper has 15 lines, with tighter spacing, and then the front, back, left and right are mirrored, slanted and dense, well-proportioned, and the whole text is integrated, which is better than other copies. The pen is tilted and tilted repeatedly, the tip of the pen is sharp, and the pen is sometimes crossed and scratched. It not only retains the traces of tracing the original traces, but also reveals the characteristics of free copying. The combination of copying and copying makes it appear natural and vivid, and has a certain " It has the advantage of "preserving the authenticity" and is the most exquisite among the copies handed down from ancient times. It embodies the artistic style of Wang Xizhi's charming and colorful calligraphy and the graceful expression and bones. It is a Tang copy that is close to the original.
According to research, the small half-seal "Shenlong" at the beginning of the volume was not the seal of Emperor Zhongzong of the Tang Dynasty, but was added by later generations. Feng Chengsu's imitation is not credible, but it is still an ancient copy that has been circulated since the Tang Dynasty.
There is a four-character title "Tang Copying Orchid Pavilion" across the water in front of this volume, which is preceded by the four-character inscription "Jin and Tang Xin Yin" written by Qianlong. The back paper contains inscriptions, postscripts and inscriptions from 20 families from Song to Ming dynasties, and more than 180 seals. Its circulation process, based on various inscriptions, seals and records, is roughly as follows: Emperor Gaozong of the Southern Song Dynasty, Lizong Neifu, Prince Consort Yang Zhen, Yuan Guo Tianxi, Ming Neifu, Wang Ji, Xiang Yuanbian, Qing Dynasty Chen Ding, Ji Yuyong, Qianlong's inner palace. Records in the past dynasties include: Ming Dynasty Wang Diyu's "Coral Net Book Record", Wu Qizhen's "Calligraphy and Painting Notes", Qing Dynasty Bian Yongyu's "Shi Gutang Calligraphy and Painting Collection·Shu Kao", Gu Fu's "Life is Spectacular", Wu Sheng's "Daguan Lu", Ruan Yuan's "Shiqu" "Essays", "Sequel to Shiqu Baoji" and other books. Engraved into the "Eight Pillars of Orchid Pavilion", ranked third.