I would like to ask: how long can I come back after going abroad, and how long can I live abroad after getting a "settle abroad" passport?

The duration of the visa refers to the time allowed for the holder to stay after entering the country. The difference between it and the visa validity period is that the visa validity period refers to the use period of the visa, that is, the holder can enter and leave the country within the specified time. If a country's entry-exit visa is valid for 3 months and the stay period is l5 days, the visa can enter or leave the country on any day within 3 months from the date of issuance, but the holder can only stay in the country from the date of entry to the date of exit 15 days. Some countries must enter the country within 3 months after issuance, and the stay period after entry is 1 month; In some countries, the visa entry period and stay period are the same. For example, the validity period and stay period of the American visitor visa is three months, that is, the entrant is valid for three months and can only stay for three months after entering the country. The validity period of the visa is generally 1 month or 3 months; The longest is generally half a year or more than 1 year, such as employment and study visa; The shortest is 3 days or 7 days, such as a transit visa.

How long you can stay is based on your visa, not your passport. The validity period of a visa is different, but the approval time for more than 3 months is longer, and the approval time for less than 3 months is shorter.