1 sentence

1. 大家都以为他在开玩笑，其实他是动真格的。

   dà​jiā dōu yǐ​wéi tā zài kāi wán​xiào, qí​shí tā shì dòng zhēn​gé de.

   Everyone thought he was joking, but he's actually being serious.

   Source: Dong Chinese Dictionary