这辆只有9个座位的厢式汽车被改装成校车，上午9点40分，当车祸发生时，它正在甘肃省庆阳市正宁县榆林子镇行驶。
The van , which contained nine seats and had been converted into a school bus of sorts , was traveling in Yulinzi township in Qingyang city , Gansu province , at9:40 am , when the crash occurred .
榆林镇