which treasure in Four Treasures of the Study is called "gold does not change": ink.
Analysis of the answer:
According to the Book of Mo in Yuan Jian Lei Han of Qing Dynasty, "If you use it every day, you will only get half of it at the age of one, and if you do, you will not change it"; The other is from the poem of Song Su Zhe, "A thousand dollars is not exchanged for the elixir, but everything needs a cloth."
data expansion
1. Inkstone
Inkstone is also known as Yan, one of the traditional handicrafts in China. Inkstone, pen, ink and paper are called the traditional Four Treasures of the Study in China, which is a necessary tool for China's calligraphy.
inkstone materials are also widely used, among them, Hongsi inkstone in Qingzhou, Shandong, Duanyan in Zhaoqing, Guangdong, Sheyan in Guzhou, Anhui (now Huangshan) and Taohe inkstone in Zhuoni, Gansu are the most prominent, which are called "four famous inkstones".
In Interpretation of Names written by Liu Xi in the Han Dynasty, it is explained that "those who write ink stones can study ink envoys and emotions". It evolved from the grinder of primitive society.
in the early days, the inkstone was primitive in shape, and it was made by pressing an ink pill with a small grindstone on a polished stone tool and grinding it into ink. By the Han Dynasty, there were carvings on inkstones, with stone covers and feet under them.
from Wei, Jin and Sui dynasties, a round porcelain inkstone appeared, with three feet and many feet. The dustpan-shaped inkstone is a common inkstone style in the Tang Dynasty, which is similar to a dustpan. One end of the inkstone falls to the ground and the other end is supported by feet. In the Tang and Song Dynasties, the shapes of inkstone were more diversified.
2. Xuan paper
Xuan paper, a specialty of Jingxian County, Xuancheng City, Anhui Province, is a national geographical indication product.
jingxian county is located in the south edge of mid-latitude, classified according to meteorological indicators, and belongs to the humid climate of north subtropical and subtropical monsoon. The climate is mild, the rainfall is abundant, the light resources are abundant, and the spring, summer, autumn and winter are distinct.
the annual average temperature is 15.7℃, and the annual extreme maximum temperature is 4.8℃. There are about 1 kinds of herbs in Jingxian county, which are suitable for the materials and manufacturing of rice paper.
During the Tianbao period of the Tang Dynasty, among the tributes transported to Chang 'an, the capital of China, there were "paper and pens" in the ships of Xuancheng County, which indicated that Xuancheng County had produced paper and pens at that time.
Xuan paper is a unique handicraft in China. It has the characteristics of soft and tough texture, smooth as jade, no decay, and ever-changing Mo Yun. It enjoys the reputation of "Millennium Life Paper" and is known as "National Treasure".
When painting with inscriptions on rice paper, Mo Yun is clear, distinct, full of backbone, full of momentum, thick but not muddy, light but not gray, and his words and paintings are vivid on the paper, full of spirits and brilliant eyes.