 The stratum in Min Nan specifically consist of Zeng group and Geng group's "n" and "t" finals when an "i" initial is present.John H. McWhorter claimed that the Hangzhou was categorized as a Wu dialect because seven tones are present in Hangzhou, which is significantly more than the typical number of tones found in northern Mandarin dialects, which is four.It stretches from "yuhang xiasha" in east to the Qiangtang River in south.