Mnemonic phrase is the other form of the private key, given the fact that it's the only identity of on-chain assets, anyone who has your private key (or mnemonic words) can control the assets on that address. Private key (or mnemonic words) is irretrievable if lost, please make sure to backup and keep it properly.
CoinEx Vault provides two kinds of backup methods, this tutorial takes the commonly-used method as an example, if you need to encrypt the backup, please check Encrypt backup of mnemonics.
Step 1: Click the “Switch” button on the top right of the asset card, or click “Me - Wallet Management” to access the wallet list page.
Step 2: Find the wallet and click the “Backup” button.
Step 3: After entering the security password to complete the security verification, carefully read and check the box to agree to each security tip, and then click "Backup".
Step 4: Write down the mnemonic phrase in order on paper or other safe places, the mnemonic phrase is irretrievable if lost, then confirm "Verify My Backup".
Step 5: Choose the corresponding words as required and click "Verify".
Step 6: The mnemonic backup is successful!