Lower left corner. 1979 There are two kinds of torch five-star watermark and ordinary five-star watermark in the corner of China Bank foreign exchange certificate. The watermark is in the lower left corner, and Ziguang can find it. Foreign exchange certificate, the full name of China Bank's foreign exchange certificate, is a RMB certificate issued by China Bank, circulated in People's Republic of China (PRC) and used on specific occasions, and its denomination is equivalent to RMB.