各人自扫门前雪，莫管他家瓦上霜

Explanation: Each metaphor just their own thing, regardless of someone else. 　　Source: "Come down Jingshitongyan Sue San husband," King bade farewell to three officers given away. It is everyone minding, Moguan his home on the cream tiles. " 　　Examples: Now with '~' strike as an example, but the oppressed that their motto. ★ Lu Xun's "South chamber North mobilization proverb"