Sifu Leo Wing is a pseudonym chosen by the author to keep the focus on what truly matters: the substance, the practice, and the effectiveness of Wing Chun, rather than an instructor's lineage or formal credentials. Behind this name is a Wing Chun master with over twenty years of martial experience and ten years of active teaching, during which he ran his own school and trained numerous students. His journey in the martial arts began at a young age, exploring different disciplines, but it was in Wing Chun that he found his true path. In the maturity of his journey, Sifu Leo Wing has devoted time, study, and intensive practice to understanding the most hidden and essential principles of this art, focusing in particular on its real-world application in combat. Through years of research, training, and hands-on experimentation, he has brought to light what he considers the heart of the system: its remarkable effectiveness when applied with understanding, sensitivity, and precision. Choosing a pseudonym is not a mask, but an invitation: to read, study, and practice without prejudice, letting Wing Chun—and its practicality—speak for itself.