1 sentence

1. 他在历史书中读到了有关十六国中夏的内容。

   tā zài lì​shǐ shū zhōng dú​dào le yǒu​guān Shí​liù​guó Zhōng​xià de nèi​róng.

   He read about the Xia state of the Sixteen Kingdoms in a history book.

   Source: Dong Chinese Dictionary