1 sentence

1. 他总是自作聪明，结果反而把事情弄糟了。

   tā zǒng​shì zì​zuò​cōng​míng, jié​guǒ fǎn'ér bǎ shì​qing nòng​zāo le.

   He always tries to be clever, but ends up making things worse.

   Source: Dong Chinese Dictionary