解放前的概况 在旧中国,天津是华北地区的首府,也是从海上进入北京的便捷要道。19世纪中叶,以英法为首的帝国主义势力开始侵入北方沿海,咸丰十年(1860)借端挑衅,自海上攻陷大沽和天津,迫使清政府签订丧权辱国条约,并把 Before liberation In old China, Tianjin was the capital of North China and the convenient gateway to Beijing from the sea. In the middle of the 19th century, the imperialist forces led by Britain and France began to invade the northern coast. In the ten years of Xianfeng (1860), they took the provocative end by destroying Dagu and Tianjin from the sea and forcing the Qing government to sign the treaty of humiliating and humiliating the country.