于洪 Traditional form: 于洪 Pinyin (reading): Yúhóng Definitions: see 于洪區/于洪区 ( Yúhóng Qū) Characters: 于 - at, in, on; to, from; alas! 洪 - deluge, flood; immense, vast Traditional characters: 于 - at, in, on; to, from; alas! 洪 - deluge, flood; immense, vast