周口店是北京西南郊的一个农村小镇,离城50千米,位于北京西山的东南麓山区和平原衔接处。这里过去因产煤和石灰石、板栗和柿子等 Zhoukoudian is a rural town on the outskirts of Beijing’s southwest, 50 kilometers away from the city. It is located at the junction of the southeast Laoshan District and the plains of Xishan Mountain in Beijing. Here in the past due to the production of coal and limestone, chestnuts and persimmons, etc.