There are many stones in Pujiang, and among the stones there are treasures, namely Pushi. Pushi is produced in the Xujiahe Formation of the Triassic System in the Xiongpo anticline, and is exposed in the Northeast Yanjinggou, Guangming Xiangshuitan, and Chaoyang Dawangjing. The stone is green with purple, cold, smooth and delicate. Usually, the stone core is taken to carve into inkstones, which are called "Puyan". "It can be seen that the main production areas of Pushi are Yanjinggou, Xiangshuitan and Dawangjing in Changqiu Mountain, Pujiang. The stone is colorful, including chicken liver, blue-purple, frozen green, banana leaf white, eel yellow, etc. The blue-purple and chicken liver-colored Pushi produced in Yanjinggou, Pushan Village, Heshan Town are the best. Since the Han Dynasty, craftsmen have been mining Pushi to make inkstones, which are used and collected by literati and scholars. Puyan was famous in the Song Dynasty. Wei Liaoweng, a native of the county, brought Puyan to Beijing to take the exam. Because the Puyan ground ink without freezing, the writing was fluent and the ink was clear, it became famous in the court and the public. Huang Yunmei wrote in "Research on the History of Ming Dynasty" In the book "Ancient Inkstones", he praised Pu Inkstone very much. He borrowed the sentence "The carved light shines like a wall of Yu" from the poem "Ancient Inkstones" by Yuan Dynasty poet Song Wu to praise it. In the Ming and Qing Dynasties, Pu Inkstone was known as one of the three famous inkstones in Shu, along with the Juque Inkstone of Panzhihua and the Baihua Inkstone of Guangyuan. In the "Pujiang Stone" chapter of "Guangxing Ji" written by Lu Yingyang in the 25th year of Kangxi in the Qing Dynasty (1686), it was recorded that "it is produced in Pujiang, Qiongzhou, and is used to make inkstones and produce ink". In his "Pujiang Local Chronicles", Yang Ziyuan, a scholar in the late Qing Dynasty, praised Pu Inkstone for its "blue and purple color, warm and hard texture", "not freezing in cold weather and not drying up in hot weather". "During the Republic of China period, craftsmen in Pujiang County, including Zhang Shiying, Chen Zixuan, Yang Zehua, Jin Dianchen, and Zhang Yungui, mined stones to make inkstones. In 1939, two Pu inkstones carved by Zhang Shiying were selected to participate in the National Handicraft Exhibition, which was highly praised by the participants. According to statistics, the total output of Pu inkstones in the 30 years of the Republic of China was about 5,000 square meters. After the founding of New China, the production of Pu inkstones gradually disappeared. In 1973, the Pujiang County Handicraft Management Bureau organized personnel to establish a Pu inkstone production cooperative factory. , recruited Pu inkstone craftsman Jin Dianchen as a backbone to guide the production of Pu inkstone. During the Cultural Revolution, Pu inkstones were not selling well, and the factory closed after more than a year. In 1979, Wenjiang District Arts and Crafts Company and Pujiang County Second Light Industry Bureau agreed that Pujiang Light Machinery Factory would take the lead in resuming the production of Pu inkstones. The product quality has been greatly improved, the shape is beautiful, and it has a strong national color and local characteristics. It has been praised by all walks of life and international friends. After the 21st century, Pu inkstones are known for their "cold and smooth like Tianhuang, delicate and tender like Duanxi, like baby skin when touched, and easy to grind ink." The quality of "delicate, fluent writing, no damage to the brush, no drying in summer, no freezing in winter" has attracted the attention of the world and become a treasure pursued by calligraphers, painters and collectors. In September 2011, Lai Qingliang and Yang Zhongzheng from the Decoration Department of Hongyu Media in Pujiang County established the "China Pu Inkstone Creation Base", hired folk Pu Inkstone craftsmen, inherited the traditional Pu Inkstone production process, and continuously developed and innovated, integrating traditional skills with modern processing technology. The Pu Inkstone carving skills are more exquisite, the themes are more extensive, and the figures, landscapes, flowers and birds are used as shapes to make it more shining. The Pu Inkstone production technology, which is about to be extinct, can be inherited and carried forward, so that the Pu Inkstone production with a long history and profound culture has entered a period of inheritance. In December 2012, the China Pu Inkstone Creation Base successfully applied for the "Liao Weng Pu Inkstone" trademark. This application project aims to better protect and develop Pu Inkstone resources, study and inherit Pu Inkstone production skills, and make Pu Inkstone, an ancient cultural and artistic wonder that is about to wither, bloom more beautifully. Information source: Chengdu Intangible Cultural Heritage Protection Center Information source: Chengdu Intangible Cultural Heritage Protection Center