Inkstone, pronounced as yàn, means a stationery used for writing calligraphy and grinding ink. Most of them are made of stone.
Inkstone usually refers to the stationery used for writing calligraphy and sharpening ink. Most of them are made of stone: inkstone. Pen and inkstone. The old term refers to the relationship between classmates (because classmates ***biyan): classmates. Inkstone friends.
One of the four famous inkstones in my country. Because the stone was taken from Longwei Mountain in ancient Shezhou (now She County), it was called "She Inkstone". She inkstone has a history of more than 1,200 years. She inkstone is tough and has the characteristics of fast ink dispensing, no damage to the pen edge, ink that does not dry up, and easy washing. The word "tough and moist" reflects the characteristics of She inkstone. There are many varieties of She inkstones, among which rib and eyebrow are the top quality.
She inkstone began in the Kaiyuan period of Tang Dynasty. According to Tao Gu's "Qing Yi Lu" of the Five Dynasties, in the second year of Kaiyuan of the Tang Dynasty, the "Dragon Scale Moon Inkstone" given to Prime Ministers Zhang Wenwei, Yang Sha and others by Xuanzong was a relatively precious Venus inkstone produced in Shezhou. It can be seen that She Inkstone has been handed down for at least 1,200 years.
The geological age of Sheshi belongs to the Sinian Period, one billion years ago, and is a kind of muddy clay slate. The geological age of Guangdong Duanshi is the Devonian Period, 400 million years ago. Kind of argillaceous limestone. The average hardness of She stone is about 4 degrees, which is 0.5 degrees higher than Duan stone. Because Sheshi is hard and moist, it has the advantage of "having been inked for many years and becoming translucent as soon as you wash it off", which is beyond the reach of Duanshi. Historically, there have been many poems praising She Inkstone. For example, Su Shi, Huang Tingjian, Mi Fu and Cai Xiang, the four masters of calligraphy in the Northern Song Dynasty, all spoke highly of She inkstone.