Test analysis: From the material "Crouching Tiger, Hidden Dragon, Rushing like a Mountain, Riding Like Spring", we can see that this kind of calligraphy belongs to cursive script, and only item A among the four options is Zhang Xu. Therefore, choosing item A is a calligrapher; CD item is a regular script calligrapher. None of them answered the question.
Comments: Calligraphy is an integral part of China's traditional culture and a treasure in China's art palace. With the proper density of Chinese characters, writing has aesthetic feeling. During the Wei, Jin, Southern and Northern Dynasties, it developed into a conscious art, and related knowledge points, such as the great calligraphers in ancient China, such as Wang Xizhi, Zhang Xu and Huai Su, also need to master their achievements.