1 sentence

1. 曹国是周代的一个诸侯国，后来被宋国兼并。

   Cáo​guó shì Zhōu​dài de yī gè zhū​hóu​guó, hòu​lái bèi Sòng​guó jiān​bìng.

   Cao was a vassal state during the Zhou Dynasty, later annexed by the State of Song.

   Source: Dong Chinese Dictionary