Moi and the role of Moi in the spiritual life of the Muong people in Hoa Binh province' by Bach My Trinh is a study and introduction to features of Moi and its roles in the spiritual life of the Muong people in Hoa Binh. Main content of the book consists of 2 chapters: 1. Overview of Muong people in Hoa Binh, overview of natural conditions, ethnic history, socio-economic and spiritual characteristics of the Muong people in Hoa Binh. 2. Moi and the roles of Moi in the spiritual life of the Muong people from traditional society to modern society, introduction to Moi (name, history of creation, criteria and procedures of creation of Moi, rituals relating to Moi...) and the impact of external cultural elements and the environment... on the development of Moi in the present context.