From the point of view of life, in this case, it is usually 1.5 yuan or 2 yuan, and the change is 10 or 6.

From an economic point of view, the appreciation of RMB means the decline of exchange rate. Without considering other factors, if the raw materials of the exercise book manufacturer are imported, it means that the same money is imported into more raw materials, which reduces the cost. Suppose that when you buy this exercise book, the Bank of China announces the appreciation of RMB, so you start to pay the bill: whether you pay 1.7 or 2.4, even if the boss gives you change for five seconds, the more money you pay before these five seconds, the more you lose. Because after 5 seconds, the extra 30 cents and 1 paid by Yuan You are not the same as the 30 cents and 1 yuan five seconds ago. In the meantime, the Bank of China will measure the country's economic turnover from a global perspective, and then it can estimate a rough figure, that is, how much more money can be printed in foreign exchange transactions. The premise is that the bank will be responsible, and then the RMB issued over 5 seconds will be recovered within a period of time. At the same time, trainee manufacturers will also have a great cost reduction because of the appreciation of these five seconds.

To sum up, regardless of other factors, it is extremely unreasonable to pay 2.4 yuan.