A calligrapher during the Tianbao period of the Tang Dynasty. Zi Lingchang, Dou Meng's younger brother, was from Fufeng (today's west of Linyou, Shaanxi Province). As an official, he served as Wailang, a member of the Household Department of the school inspection department, and as a staff officer at Song Bian Jiedu. Gong Shu, he tried to write "Shu Shu Fu". Dou Mengyun: My brother Zhang and Wang, the masters of calligraphy and calligraphy, are proficient in Cao Li.
  "Shu Shu Fu" is a book with a precise and detailed purpose and a detailed explanation of its secret meaning. It dates from ancient times and ended at the time of the merger. Finally, his brother Meng wrote the essence of the title and made annotations for it (one theory is that Dou Xue made his own annotations). ). The two volumes of "Shu Shu Fu" are described in the first part, from ancient times to the Northern and Southern Dynasties, and in the second part, from the Tang Dynasty to Emperor Gaozu, Taizong, Empress Wu, Ruizong, and Emperor Ming, and finally to his brother Meng and Liu Qin's sister. The writing date is about In Tianbao. From the beginning to the end, there are thirteen generations, one hundred and ninety-eight people (some say there are twenty-seven people). The descriptions of the titles and titles are all extremely precise, and the annotations are particularly poor. This article is a comprehensive review of calligraphers of all dynasties. Since then, there have been many famous works that have been continued or imitated by later generations. After this chapter, there were many calligraphers and no heirs. It was a dilemma to collect and criticize. The difficulty of writing and writing, like other things, led to this chapter. It is said to be a unique work passed down through the ages.