China Customs: Individuals can take $5,000 in cash out of the country. Those who spend more than US$ 5,000 and less than US$ 65,438+00,000 need a certificate from the Bank of China and can also leave the country. Those who carry more than $65,438+00,000 must hold the documents of the Municipal Administration of Foreign Exchange.

According to U.S. Customs regulations, individuals who bring cash under $65,438+00,000 into the country and cash over $65,438+00,000 must declare (two forms must be filled out on the plane, one is "customs declaration form" and the other is "I-94 form").

If the amount exceeds the prescribed amount, the customs has the right to confiscate it, and if the amount is large, it must be investigated and dealt with according to law.

Secondly:

In the United States, there are fewer opportunities to use cash, usually credit cards (remember to bring multi-currency credit cards). It is suggested to change some small US dollars, such as 1 US dollars (required for tipping) and1US dollars (occasionally, when a small shop checks out, the dissatisfied amount needs to be paid in cash).