Chinese

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to link up; to couple; to link up with
to link up; to couple; to link up with; to establish contact with
 
letter; true; to believe
letter; true; to believe; sign; evidence
 
trad. (掛鉤信) 掛鉤
simp. (挂钩信) 挂钩

Pronunciation

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Noun

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掛鉤信

  1. (countable, Mainland China, dated) contact letter sent to agent of the enemy (Classifier: m)