海河 Traditional form: 海河 Pinyin (reading): Hǎihé Definitions: Hai He (a system of five waterways around Tianjin, flowing into Bohai 渤海 at Dagukou 大沽口) Characters: 海 - sea, ocean; maritime 河 - river, stream; the Yellow river Traditional characters: 海 - sea, ocean; maritime 河 - river, stream; the Yellow river