1, account classification, using different passwords: different levels of accounts use different passwords. If it is an account that does not involve personal privacy and money, you can set a relatively simple password. But if it's a bank card or something, you need to set a more complicated password. The password must be at least 8 digits and above, and the same password cannot be used for multiple accounts.
In addition to memorizing passwords composed of various characters, you can also use idioms to conceive a sentence or a line of favorite songs or poems, and create passwords with the first letter of each word.