It's actually quite simple. If we deposit money in the bank with foreign currency, it is cash. If your foreign currency comes from RMB, it is exchanged in the bank and has never been withdrawn, it is cash.

The state is very strict with foreign exchange management. Cash remittance can only be remitted to other accounts in my name (inter-bank) and relatives and friends accounts (household registration book should be provided), and no extra handling fee is charged.

If it is cash, remittance is not allowed. Only by paying the money transfer fee to the bank can the bank remit the money to other accounts. The specific fees vary from bank to bank, some are three thousandths, directly deducting the foreign currency balance, and some banks require payment in RMB.

In addition, note that the exchange rate of cash for RMB is different, with low cash and high cash. There is a one-way flow between cash and cash. Cash is converted into cash when it is withdrawn, and cash can only be converted into cash again in the form of payment remittance as I mentioned above.