2 sentences for 当家 (dāng​jiā — manage household)

1. 庄稼一枝花，全靠粪当家。

   zhuāng​jia yī zhī huā, quán kào fèn dāng​jiā.

   A crop is like a flower; it all depends on the manure.

   Source: Dong Chinese Dictionary

2. 他年纪虽小，却已经开始当家了。

   tā nián​jì suī xiǎo, què yǐ​jīng kāi​shǐ dāng​jiā le.

   Despite his young age, he has already started managing the household.

   Source: Dong Chinese Dictionary