1 sentence

1. 郑和下西洋是中国航海史上的壮举。

   Zhèng Hé xià Xī​yáng shì Zhōng​guó háng​hǎi​shǐ shàng de zhuàng​jǔ.

   Zheng He's voyages to the Western Oceans were a great feat in Chinese maritime history.

   Source: Dong Chinese Dictionary