美金 must spend outside China. When China got 美金 from international trade, it must be changed to Renminbi for inside use and leave as 美金 for outside trade. If you don't have many can buy outside, how can you do for the 美金?
美金 must spend outside China. When China got 美金 from international trade, it must be changed to Renminbi for inside use and leave as 美金 for outside trade. If you don't have many can buy outside, how can you do for the 美金?