[ gè rén zì sǎo mén qián xuě，mò guǎn tā rén wǎ shàng shuāng ]
莫管:不要管。比喻不要多管閒事。
宋·陳元靚《事林廣記·警世格言》:“自家掃取門前雪，莫管他人屋上霜。”
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Every man sweeps the snow from his door, and he does not care for the frost on the grass