To go from door to door, visiting every household in a specific area.
每家每户，户户不漏。挨，依次，顺次。
老舍《四世同堂》七四自从他作了副县长，随着白巡长挨家挨户地收铜铁，他的美誉便降落了许多。”
The volunteers went from door to door to collect donations.
Learn the next connected idiom: 挨家挨户 (āi jiā āi hù) → 户枢不蠹 (hù shū bù dù)
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