Senses
外江 northern provinces
(literary) used by people in 福建 and 广东 to refer to provinces north of the lower 扬子江
外江 Shanghai opera style
(bound form) refers to a specific Shanghai school of opera, also known as the 海派 style
外江 northerner
a person from the provinces north of the lower 扬子江 as referred to by people in 福建 or 广东