1 sentence

1. 他刚才还有说有笑的，突然就变脸了。

   tā gāng​cái hái yǒu​shuō​yǒu​xiào de, tū​rán jiù biàn​liǎn le.

   He was all smiles just a moment ago, but then he suddenly turned hostile.

   Source: Dong Chinese Dictionary