míng / yīng / zōng / shí / qī / ， / Wǎ / là / jūn / duì / céng / yī / dù / bāo / wéi / běi / jīng

明英宗时期，瓦剌军队曾一度包围北京。

During the reign of Emperor Yingzong of Ming, the Oirat Mongol army once besieged Beijing.