先斬後奏

xiānzhǎnhòuzòu

execute somebody first and report to the emperor afterwards—act first and report afterwards

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xian1 zhan3 hou4 zou4

first decapitate then present your trophy (idiom); act first, report later

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先斬後奏|先斩后奏 [xiān zhǎn hòu zòu] ► first decapitate then present your trophy (idiom); act first, report later