This paper explores the philosophical thought of Ti Ni Da Luu Chi (Vinītaruci), widely recognized as the first patriarch who laid the foundation for the organized Zen tradition in Vietnam. Drawing on core Mahayana doctrines, Prajnaparamita, Tam Luan, and elements of Tantric Buddhism, the Ti Ni Da Luu Chi Zen sect developed a distinctive philosophical system addressing ontology, epistemology,...