xī / zhēng / jūn / duì / lì / jīng / qiān / xīn / wàn / kǔ / ， / zhōng / yú / dǐ / dá / xī / yù / 。

西征军队历经千辛万苦，终于抵达西域。

The western expedition army endured countless hardships before finally arriving in the Western Regions.