The port was opened to foreign trade by the qing rulers in 1863 as a consequence of the treaty of peking one of the " unequal treaties " which opened up treaty ports and provided bases for the expansion of imperialist powers into china 发展简史：原名打狗。明永历十五年一六六一设万年县于今左营旧城址，一八六三年因北京条约，清朝正式开港。
