Calligraphy Zhang Dun is quite proud of his calligraphy and calls himself "Mo Zen". Huang Bosi commented on Zhang Dun's calligraphy: "In the past hundred years, among calligraphers, Zhang Dun is the only one who can express the meaning of his brushstrokes. Although he is not as sophisticated as the Tang Dynasty people, his brushwork surpasses the Tang Dynasty people in terms of artistic conception. His artistic conception is higher than that of Chu Suiliang and Xue Ji, among the four great masters of the early Tang Dynasty. In his later years, The better, the look is like that of Wang Xizhi. "Ming Dynasty Zhao Shun's "Graphite Engraving Hua" says: "Zhang Zihou's "Inscriptions on Caotang Temple" uses a lying brush, and the hairspring method is also powerful.
"Zhang Dun survived. His calligraphy includes the stone carving of "Inscription on Caotang Temple" and "Tie of Kuaiji Zunhou". His "Tie of Kuaiji Zunhou" is collected by the National Palace Museum in Taipei. Invention During the period of Zhang Dun's weapons supervision, he paid attention to improving the production of weapons and called on officials and people to contribute their skills in weapons, so that the weapons of the Northern Song Dynasty became increasingly sophisticated. Zhang Dun and Shen Kuo were in charge of the weapons inspection together, and were ordered to discuss the chariot system and develop a new type of chariot. Shenzong was very happy, inspected it personally in Yanhe Hall, and hid it in the arsenal.