各人自扫门前雪，莫管他家瓦上霜

gè rén zì sǎo mén qián xuě , mò guǎn tā jiā wǎ shàng shuānggerenzisaomenqianxue,moguantajiawashangshuang

1. sweep the snow from your own door step, don't worry about the frost on your neighbor's roof (idiom)

Study it in Yanamino