Why is the unit "jiao" in RMB called "gross" and "yuan" called "block"?

Why does the new China RMB adopt "yuan" as the unit? At present, there are two popular sayings: one thinks that the appearance of "yuan" in currency began in the early Tang Dynasty. Tang Gaozu abolished five baht and changed it to "Kaiyuan Bao Tong". "Kaiyuan" means to open a new era. In the 26th year of Guangxu reign in Qing Dynasty (1900), Guangdong began to manufacture machine-made copper coins while casting silver coins. The issuance of copper coins in the Qing Dynasty laid the foundation for today's currency name "Yuan". Due to the expansion of exchange, people urgently need lighter currencies to replace silver dollars and copper dollars. At this time, the bank printed the silver and copper exchange certificates. The face value of this exchange certificate, like the actual silver dollar and copper dollar, gradually evolved into paper money. This is how the name of RMB "Yuan" in China evolved.

Another view is that the use of yuan as a monetary unit began in the Wanli period of the Ming Dynasty. At that time, the most popular currency in Europe and America, the "silver dollar", began to be introduced to China, and the most popular one was the Mexican silver dollar, which was also called the Eagle Ocean because of its eagle pattern. Because the material is silver and the shape is round, there is a kind called round. The word "circle" is both a currency name and a unit name. For the convenience of writing, people later replaced "Yuan" with homophonic "Yuan". The unit name of RMB-"Yuan" also evolved from this.

As for the marking units "angle" and "minute" below yuan, they are also inherited by habit. The original meaning of "horn" is animal horn, and Shuowen contains: "Divide, don't also; From the perspective of eight knives, the knives are also separate. " The original meaning is separation, separation, delay, and also refers to separated parts. Therefore, in terms of length, one percent or two percent is called points; In terms of local acres, one tenth of an acre counts. Quoting a monetary unit, one hundredth of a dollar is also called a point. The "points" of RMB naturally arise here.