When the car near a sand hill, like a thunderous clarion call from the Voice of Sand Mountain internal issue, intermittent, at the high low, melodious Sixian such as Mandrax, Mandrax if Tiejibentu.

• 当汽车开近沙山时，似有雷鸣号角之声从沙山内部发出，时断时续，时高时低，忽如丝弦悠扬，忽若铁骑奔突。