For this aspect, the document of China’s Interim Administration Measures for Foreign Currency Notes in Entry and Exit has explicit rules:   Entry Travelers entering China with no more than the equivalent of 5,000 US dollars don’t have to declare. More than the equivalent of 5,000 US dollars, should be written to declare at the time of entry. Multiple round trips in one day and short-term multiple round trips are not included. There is no upper limit for travelers’ foreign currency cash.   Exit - If a person carries foreign currency cash out of the country and does not exceed the amount of foreign currency cash in the most recent entry, he or she does not need to apply for a Permit to Take Foreign Currency out of the Customs Territory. If you are leaving the country with cash worth less than USD 5000, you do not need to apply for a Permit. - If the individual leaving the country carries between USD 5,000 and USD 10,000 in equivalent value, he or she must apply to the bank for carrying permission, which must be provided by the bank and have its seal. - If the quantity of foreign money exceeds US$10,000, the person must present a valid warrant issued by State Administration of Foreign Exchange (SAFE) authorities. Travelers who leave the nation for the second time within 15 days are subject to a US$1000 foreign currency limit. The restriction for leaving the nation a second time on the same day is US$500. - If you have a declaration record of foreign cash when you enter, customs will check it before allowing you to pass.