1.Click to openCMD Console
（1）Input 'help' Get console method
（2）Input "authorizedAddress(address,addresspwd)" method，Authorized address（Note: the address parameter represents the public chain address you want to authorize, and the addresspwd parameter represents your creation password. The password is user-defined, please do not forget）
（3）Click send to return to the figure below, which means the authorized address is successful（Note: please remember the authorization code）
（4）Input "erc20ExchangeCMD(address,authorizationcode)" method，Method of calling erc20 exchange public chain（Note: the address parameter represents the public chain address you authorized, and the authorization code parameter represents your authorization code）
（5）Click send and return as shown in the figure below, which means the call is successful. You only need to transfer the CMD token to the returned erc20 address, and the official block system will automatically transfer the same CMD to your public chain address, which is expected to arrive within 1 working day.