In which province is Shexian, the main producing area of Four Treasures of the Study?

Shexian County is the main producing area of Four Treasures of the Study Zhonghuimo and Sheyan, which is located in Anhui Province. Recently, China's traditional culture has shown signs of revival. Thanks to the spread of this era, many people are more and more interested in studying, whether it is intangible cultural heritage such as pen and ink in Four Treasures of the Study or folk handicrafts. Pen, ink, paper and inkstone, as unique painting and calligraphy tools in China, are also studied and exchanged by many professionals and enthusiasts. Pen, ink, paper and inkstone, also known as Four Treasures of the Study, originated from the Northern and Southern Dynasties in history. Moreover, for literati, pen, ink, paper and inkstone must refer to Xuanbi in Xuancheng, Anhui, Huimo in Shexian, Huizhou, Anhui, and Sheyan in Shexian, Huizhou, Anhui. Of course, there are Yan Tao in Gansu and Guangdong's Duanyan. However, Xuancheng, Anhui Province is the most authentic producing area in Four Treasures of the Study, and enjoys a high reputation in the world.