 Three ethnic Nanai villages remain, those being Dzhuen, Ulika, and Dada; in the remaining populated areas, the proportion of Nanais among local residents is much smaller.Scholars in China have traditionally presented less fine-grained dialect classifications; An identified only two, Hezhen and Qile'en, the former referring to all varieties of the language spoken in Russia.He conducted his studies in Jiejinkou, Bacha, And Sipai villages in Heilongjiang; at the time of his survey in 1982, the youngest fluent speaker was 55, and the oldest 72.