The example sentence is the famous opening of Bai Juyi's 《
长恨歌》 (Song of Everlasting Sorrow, 806 CE), describing the moment the An Lushan rebellion broke into the Tang capital.
渔阳 (Yuyang, near modern Beijing) was An Lushan's rebel base; the
鼙鼓 'cavalry drums' shaking the earth = the moment the rebellion reached Chang'an and shattered the imperial court's pleasures.