In Baoding University for the Aged, I once saw Mr. Zhang's vertical axis regular script, which was mounted in the Republic of China and well preserved, and is one of his unique masterpieces of calligraphy style. The work is excerpted from Ode to Tokyo by Zhang Heng, a great writer in Han Dynasty, with four lines and 95 words. From beginning to end, the pen is steady, the words are rigorous, the black and white are balanced, and the square is beautiful. The spacing is harmonious and slightly wider. The charm is consistent and the rules are natural. The font is open and closed, and the artistic conception is far-reaching and sparse. There are vermilion columns and vertical columns on the paper, which look harmonious and striking. The signature is "Zhang wrote Zhang Heng's Tokyo Fu". At the bottom of the inscription, there are two seals, with the rectangle "Hai Ruo was originally named Guo Rong" above and the square "Chen Jia Hanlin" below (see photo).

The inscription written by Zhang and the inscription of the old Beijing brand "Tai Sen Teahouse" written by 1945 after the victory of the Anti-Japanese War have been preserved to this day. He also wrote the plaque of the Song Jun Pavilion store in Beijing Liulichang. During the national cultural relics survey from June, 5438 to February, 2009, a number of precious monuments, epitaphs and tombstones were found in the home of Zhu Jinghui, a descendant of Zhu in Shanxi. Among them, Zhu's "Virtue Monument" was written by Fu and Zhang. In the 1920s and 1930s, Zhang Hairuo also wrote the title of "A Brief Introduction to Cultural Relics of the Old Capital", which was made of real Tao Jin and engraved with the six-character seal of "Hai Ruo Han Ji Monument". The seal character he carved was an eight-point brick, not a seal script. At that time, he was very famous in Beijing, and the calligraphy circle called him a famous legalist in Beijing.