The Bank of China can amplify the leverage by 20 times. The spread is calculated as follows: If you bought $65,438+0,000 at 6.8297 and spent RMB 6,829, the spread is the income you have to pay to the bank when you buy dollars from the bank at this price, and it is also the fee charged by the bank. Of course, the spreads of China banks are not limited to these. It usually takes 10 hour or even dozens of hours.