Taivo A Taiwan Mandarin dictionary

閉門塞竇

bìménsèdòu

ㄅㄧˋ ㄇㄣˊ ㄙㄜˋ ㄉㄡˋ

Simplified 闭门塞窦

  1. 1to close doors and block openings (idiom); mounting a strict defense

Keep 閉門塞竇 and it comes back until you know it.

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