2 sentences

1. 许多人不知道幕后发生了什么。

   xǔ​duō rén bù​zhī​dào mù​hòu fā​shēng le shén​me.

   Many people don't know what happened behind the scenes.

   Source: CCMatrix

2. 但他的大部分工作都是在幕后默默进行的。

   dàn tā de dà​bù​fen gōng​zuò dōu shì zài mù​hòu mò​mò jìn​xíng de.

   Much of his work was done quietly behind the scenes.

   Source: CCMatrix