wholesale stainless steel jewelry uk I work abroad and my salary is US dollars. After I want to return to China, I want to exchange all the renminbi. There is a ICBC savings card. I want to ask how to exchange it into the people.

wholesale stainless steel jewelry uk I work abroad and my salary is US dollars. After I want to return to China, I want to exchange all the renminbi. I have a ICBC savings card. I want to ask how to exchange for RMB, when the exchange rate is the highest, and how much can I exchange at one time?