Detention is legal in foreign countries, but it is not recommended in China, because the relevant systems abroad are relatively perfect, there are various solutions, and the detention regulations are relatively mature. It is safer to operate by yourself in China.
Foreign custody futures accounts are operated by professional fund managers (such as CTA or CPO, futures trading or other derivative securities) on behalf of individuals. These funds can hold long and short positions in futures contracts and options, global commodity futures contracts, interest rates, stocks and money markets.
The custody futures account is supervised by the federal government of the United States, and provides advice to the fund through CTA and CPO. Most of these entities need to be registered with the Commodity Futures Trading Commission and the National Futures Association and abide by their disclosure and reporting requirements.
However, many domestic third-party custody companies are deceptive, and there is no guarantee to trick investors into transferring funds into personal or leather bag company accounts and then running away, or losing money, and so on.