9月7日晚，到北京上访的山西吕梁退伍老兵刚下火车，就被一群便衣警察拦截在了火车站。
On the evening of September 7, a group of retired veterans from Lüliang, Shanxi, who had come to Beijing to petition, were intercepted at the train station by a group of plainclothes officers immediately after getting off the train.