Xī / ān / Shì / biàn / gǎi / biàn / le / Zhōng / guó / jìn / dài / lì / shǐ / de / fā / zhǎn / jìn / chéng

西安事变改变了中国近代历史的发展进程。

The Xi'an Incident changed the course of modern Chinese history.