2 sentences

1. 空谈徒增笑柄。

   kōng​tán tú zēng xiào​bǐng.

   Empty talk only makes one more of a laughingstock.

   Source: Dong Chinese Dictionary

2. 他是一个非常务实的人，从不空谈。

   tā shì yī gè fēi​cháng wù​shí de rén, cóng bù kōng​tán.

   He is a very pragmatic person who never engages in empty talk.

   Source: Dong Chinese Dictionary