First, check the stamps and numbers. Generally speaking, genuine seals and numbers are clear, and the handwriting is even and powerful.

Second, it depends on whether the paper is the old paper of the Republic of China. Nowadays, counterfeit money is generally modern paper.

Third, it is forbidden to copy books and buy banknotes of the Republic of China in the market, because many counterfeiters also make fakes according to the appearance of books, and sometimes even due to printing reasons, the color of banknotes in books is slightly different from that of genuine ones, resulting in color difference between counterfeit and genuine ones.

Fourth, it depends on whether the printing is clear and whether there is overlap;