南征北讨

nan2 zheng1 bei3 tao3

war on all sides (idiom); fighting from all four quarters

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南征北讨

nán zhēng běi tǎo

conquer north and south

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南征北討|南征北讨 [nán zhēng běi tǎo] ► war on all sides (idiom); fighting from all four quarters