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Open the tool →闭门塞窦 (bì mén sè dòu) is a Chinese idiom (chengyu) meaning “to seal off all access points”.
闭门塞窦 is pronounced bì mén sè dòu in Mandarin Chinese.
Literally, 闭门塞窦 means “Close doors and block holes”. It is used to mean “to seal off all access points”.
关闭门窗,堵塞洞穴。多谓防备之严。