"Follow the trail of ancient cultures" is a book that collected a number of archaeological works of Prof. Ha Van Tan. He was involved in discovering the first vestiges of Son Vi culture dating back to the late Stone Age, which is the origin of Hoa Binh culture. He was also the first to analyze Bau Tro culture, a post-Neolithic culture in central Vietnam, preliminary division of cultural types of this culture, and proving Bau Tro culture is derived from Quynh Van culture. He participated in the isolation of Ha Giang culture, a post-Neolithic and early Iron Age culture in the North Vietnam. He discovered and translated many ancient texts, especially many civilizations on stelae and bronze bells, thus making new contributions to Vietnamese history. His works of archeology and Vietnamese history have been exceptionally outstanding, highly scientific, with many new points and made great contributions to Vietnamese and regional archeological and historical science.