The term 'Way of Lao-Tzu' is a reference to the ancient Chinese philosopher Lao-Tzu, who is credited with writing the Tao Te Ching, an influential text in Chinese philosophy. The crossword solution for this term is TAO, which is a three letter word that refers to the same concept as the Way of Lao-Tzu. Tao is a Chinese term meaning 'the way' or 'PATH, ' and it is used to refer to the teachings of Lao-Tzu.