2 sentences

1. 不要计较已经发生的事情。

   bù​yào jì​jiào yǐ​jing fā​shēng de shì​qing.

   Do not dwell on what has already happened.

   Source: CCMatrix

2. 不值得为这样的小数目斤斤计较。

   bù zhí​de wèi zhè​yàng de xiǎo​shù mù jīn​jīn​jì​jiào.

   It isn't worth quibbling over such a small amount.

   Source: UM-Corpus: News