ˇㄎㄡˇkǒuㄊㄨㄥtōngㄕㄤshāng

  1. 清道鴉片戰爭南京條約通商口岸五口通商」。外國人中國通商

the five treaty ports forced on Qing China by the 1842 treaty of Nanjing 南京條約, namely: Guangzhou 廣州, Fuzhou 福州, Ningbo 寧波, Xiamen or Amoy 廈門