1 sentence

1. 他的分析正中要害，指出了计划中最大的问题。

   tā de fēn​xī zhèng​zhōng yào​hài, zhǐ​chū le jì​huà zhōng zuì dà de wèn​tí.

   His analysis hit the nail on the head, identifying the biggest problem with the plan.

   Source: Dong Chinese Dictionary