It didn't work. According to the regulations of the State Administration of Foreign Exchange, the amount of foreign exchange purchased by individuals each year is 50,000 US dollars, which is enjoyed by * * *. No matter which bank he changes, the amount will be deducted from it, as long as it does not exceed 50 thousand dollars a year. Therefore, if individuals exchange the maximum amount of US dollars in different banks for two consecutive days, as long as the accumulated amount of foreign exchange purchased within one year is guaranteed not to exceed US$ 50,000, there will be no impact.