The book "Contributing to the study of cultures and ethnic groups" by Professor Nguyen Tu Chi is a collection of scientific research and his articles that have been published in scientific journals, books, and newspapers. It can be said that these are his valuable research heritages for the field of culture and ethnic groups, suggesting unique discoveries about indigenous culture, and recognize a research direction "promoting the subjectivity and indigenous views" of Vietnam's ethnography. Professor Nguyen Tu Chi (1925-1995) was rated as the leading ethnologist in Vietnam in the 20th century by experts, he has a deep understanding of Muong people and Vietnamese villages.