Wing Chun (Cantonese) or Yongchun (Mandarin) is a concept-based martial art, a form of Southern Chinese kung fu, and a close-quarters system of self-defense. It is a martial arts style characterized by its focus on close-quarters hand-to-hand combat, rapid-fire punches, and straightforward efficiency. It has a philosophy that emphasizes capturing and sticking to an opponent's centerline. This is accomplished using simultaneous attack and defense, tactile sensitivity, and using an opponent's force against them.
Ip Man and Bruce Lee practicing "双黐手" (Seung Chi Sau), meaning "double sticky hands"