Minzu University of China
The Fangcun was first studied by Fang-Kuei Li in 1942, and the Yangfeng dialect was studied in the 1980s by Dabai Ni of the Minzu University of China. Ni also noted that the Mak people only sing Bouyei folk songs, and that about 5,000 Mak people have shifted to the Bouyei language.