Summary: The book is a comprehensive study of the Rengma Nagas tribe by the author, with deep gratitude to the Government of Assam for funding. It covers a wide range of topics from language, agricultural ceremonies, mensuration, and neighboring tribes. The author delves into cultural preservation and impact, highlighting the importance of anthropology in guiding human progress in a globalized world. The text includes detailed appendices and indexes, with discussions on spiritual beliefs, rituals, and taboos. The narrative includes intricate details on tribal traditions, migrations, and social norms such as restrictions on movement, marriage customs, and agricultural practices. The appendix also sheds light on the unique calendar systems of the different Rengma subgroups, showcasing the cultural diversity within the tribe. A blend of folklore, historical narratives, and anthropological analysis, the book provides a rich tapestry of the Rengma Naga tribe's culture, beliefs, and way of life.