Notice:
1. Regardless of whether dealing with the main chain or the side chain of the same currency, the exchange ratio always remains 1:1
2. When certain blockchains are in maintenance, when there are risky transactions or high transfer gas fees, the corresponding deposit and withdrawal entry will be terminated.
3. When the demand for withdrawal of assets on a certain chain is greater than the deposit, there may be a situation where the supply of the currency for a certain chain is insufficient.