Which city in Northeast China has the most Japanese species?

Founder county, Heilongjiang. Before 1909 (the year of Xuantongyuan, Qing Dynasty), Datong County (now Tonghe County) located on the north bank of Songhua River (Heilongjiang Province) was the county with the largest number of Japanese descendants: founder county, Heilongjiang Province. 1June 2, 909 (April of Xuantongyuan Year 15), the "Bangtoupao" area in the south of Datong County was demarcated and "Bangtou County" was established. Because of its unsightly name and similar pronunciation, it was renamed "founder county".