第一,正面左侧空白处迎光透视,可见立体感很强的荷花水印。第二,钞票纸中有一条明暗相间的安全线。第三,将票面置于与眼睛接近平行的位置,面对光源作平面旋转45度或90度角,在正面右上方的装饰图案中可看到“20”字样。第四,正面采用双色横号码(两位冠字、八位号码)印刷。号码左半部为红色,右半 First, the positive left blank space Ying perspective, we can see a strong three-dimensional lotus watermark. Second, there is a light and dark safety line in the banknote paper. Third, place the ticket in a position parallel to the eyes. When facing the light source, rotate the plane 45 degrees or 90 degrees. You can see “20” in the decoration pattern on the upper right of the front. Fourth, the front with two-color horizontal number (two crown words, eight numbers) printing. The left half of the number is red, the right half