During the Ly and Tran dynasties (Ly - Tran (1009-1400) were the two longest dynasties in Vietnamese feudal history and flourished in all fields), which spanned approximately 400 years from the 11th to the 14th century, Vietnam experienced a significant period in its feudal history. Buddhism played a substantial role in the nation's construction and defense during this time. The era witnessed the presence of notable monks and renowned meditation masters who deeply integrated Buddhist teachings into their lives, particularly emphasizing the rich tradition of "Phụng Đạo, yêu Nước" (Devotion to the Dhamma, Love for the Country). This tradition served as a guiding beacon, imparting the core principles to generations of monks, nuns, and Buddhist followers, fostering their inheritance, learning, and adherence. Over nearly a millennium, the "Devotion to the Dhamma, Love for the Country" tradition has been highly regarded and consistently emphasized in each period and historical phase of the nation. In the present context, the spiritual education of "Devotion to the Dhamma, Love for the Country" by certain senior monks during the Ly and Tran dynasties is deemed a necessary and significant task. It holds crucial importance in the ongoing process of building a prosperous Vietnam, gradually moving towards strength and greatness as seen today.