Related introduction:
The annual money in copper coins has been customized since the Song Dynasty. In the Song Dynasty, the title changed frequently, and a lot of money was invested in it. After the Yuan Dynasty, all the coins in the past dynasties were basically named after the year number.
In the early years of the Northern Song Dynasty, Sichuan used iron coins, which were light in weight. 1 0,000 coins weigh 25 Jin, and it took 90 Jin to several hundred Jin to buy 1 piece of silk. It is inconvenient to circulate. So, the merchant issued a kind of paper money called Jiaozi instead of iron money.
1. cake money: the common name of Wang Mang's thick goods spring. Later, in the Northern Song Dynasty, the wide and thick Xianping was also called cake money.
2. Coin matching: refers to symmetrical coins in Qian Wen. The Qian Wen, round neck, size, thickness and copper coins are the same, but different characters are used, but the fonts and strokes are still consistent with each other, which is also called Hehe Money. It began in the Southern Tang Dynasty and flourished in the Song Dynasty.
3. Tin coin: A kind of tin coin, which was mainly used by Cai Jing in Huizong period of Northern Song Dynasty.
Extended data
In Song Dynasty, the commerce was developed, and the common currencies were copper coins and silver. During the reign of Emperor Taizong, 800,000 coins were minted every year. By the time God lived in Xining for six years, it had reached more than six million. Due to the import of commodities, a large number of copper coins and silver flowed out in the Song Dynasty, resulting in a shortage of hard currency.
During the Hui Zong period, Jiaozi was renamed Yin Qian, and the circulation field expanded. In the Southern Song Dynasty, it was changed to the official Huizi in 1 160 (the 30th year of Emperor Gaozong Shaoxing). Huizi mainly includes Huizi in the southeast of China, Huizi in Hubei and Huizi in Huaibei. However, in order to prevent copper coins from flowing northward, the Song government stipulated that only iron coins could be used at the border with gold.
Baidu Encyclopedia-Song Dynasty