There are three ways to transfer USDT across chains(e.g. transfer your USDT from BNB Chain to Ethereum) in AScoin wallet.

Binance Market Top-Up and Withdrawal: First, top-up USDT from your wallet (BNB Chain) to Binance Market, and then choose Ethereum's receiving address when withdrawing your USDT, i.e. by switching between different main networks to make cross-chain transfers.

Cloud Wallet Top-Up and Withdrawal: First top up USDT from your wallet (BNB Chain) to the Cloud Wallet, then choose Ethereum's receiving address when you withdraw your USDT, i.e. transfer across chains by switching to a different main network.

AScoin Swap: A cross-chain bridge will be launched soon to support cross-chain swap.