1 sentence

1. 两座城市正式签署了缔结友好城市之盟。

   liǎng zuò chéng​shì zhèng​shì qiān​shǔ le dì​jié yǒu​hǎo chéng​shì zhī méng.

   The two cities officially signed an agreement to become sister cities.

   Source: Dong Chinese Dictionary