In calligraphy, Zhang is good at observing objective things and combining objective natural images with personal subjective feelings. He not only inherits tradition, but also dares to innovate. By inheriting and innovating the calligraphy achievements of predecessors, his own weed art reached a peak in the prosperous Tang Dynasty.
Zhang Xu's calligraphy skill is profound, and he created a model of wild grass style with his exquisite brushwork and bold temperament. From the perspective of a real artist, Zhang Xu searched for symbols corresponding to his emotions and personality in nature and life, integrated the situation of all things in the world with his own subjective modality, let his feelings go at will, and used techniques as a means of spiritual expression.
Being an official is not obvious.
About 685 years ago, Zhang Xu was born in a high family background, and studied calligraphy with his cousin Lu Yanyuan. When he was old, Zhang Xu was promoted or recommended to be an official, and was released to Changshu as a county commandant. At the beginning of Kaiyuan, or a little earlier, Zhang Xu's calligraphy skills had been developed and respected by Wu Daozi, so Wu Daozi asked Zhang Xu for his brushwork.
In the 13th year of Kaiyuan (725), Zhang Xu was the left governor in Luoyang. At this time, Zhang Xu's calligraphy has reached a very high level, which is called "Three Musts" with Li Bai's poetry and Pei Min's sword dance. Later, Zhang Xu served as a long history, so the world called him "Zhang Changshi".