Li Fang-Kuei
Wu's place within the greater scope of Sinitic varieties is less easily typified than protoypically northern Chinese such as Mandarin or prototypically southern Chinese such as Cantonese. Its original classification, along with the other Sinitic varieties, was established in 1937 by Li Fang-Kuei, whose boundaries more or less have remained the same and were adopted by Yuan Jiahua in his influential 1961 dialect primer.