1 sentence

1. 很多历史学家都在深入研究毛泽东的生平与著作。

   hěn​duō lì​shǐ​xué​jiā dōu zài shēn​rù yán​jiū Máo Zé​dōng de shēng​píng yǔ zhù​zuò.

   Many historians are conducting in-depth research into Mao Zedong's life and works.

   Source: Dong Chinese Dictionary