飞艇定位技巧图解

简介：When the Hongwu Dynasty was first issued, a Ming Dynasty treasure banknote worth 1,000 Wen could be exchanged for 800 Wen copper coins. Later, it became more and more abundant, and the exchangeable copper coins became less and less. It dropped from 800 to 80. In the end, no one wanted it at all. , turned into waste paper.