Any bank can exchange Hong Kong dollars, Japanese yen, US dollars, euros, Canadian dollars and other hard currencies. But the won is not "hard" enough. You have to change it at the branch level of China Bank (the branch may not be able to do it yet), and you should be able to change it at the weekend. You can change it directly with your ID card.

10000 won is about 5 1.6 yuan RMB.

65438+ million won is about 5 16 yuan RMB.