I am Japanese and I practiced martial arts as a teenager. Nihon Kempo (a martial art used by the Japanese Self-Defense Forces), Judo, Jujitsu, and Kendo. I was young and I wanted to protect myself and what I cared about. But eventually I came to see that there was no point in fighting physically and hurting each other.
Generally speaking, a woman cannot defeat a man, a small person cannot defeat a large person, and an old person cannot defeat a young person. Furthermore, one person cannot take on many, and a person with nothing can't beat a person with weapons and tools. That cannot usually be overridden by physical techniques.
In old Japan, there was a master swordsman who was said to be undefeated for his entire life. The meaning of "undefeated" is that he fought and survived. His name was Musashi Miyamoto. In his later years, he followed the path of Zen instead of the sword. Zen is a spiritual (mental) path that includes meditation.
However, that doesn't mean that martial arts are without meaning. One of the lesser known purposes of martial arts is to control fear. It is about training the mind to correctly assess a situation and take the best possible action. That includes retreating without fighting.
Martial arts activates the lower chakras involved in fighting and survival. The energy increased mainly in the sacral chakra is directed to the arms and legs. Practicing punches and kicks involves practicing breathing techniques without being aware of it. Also, imagining yourself and your opponent (shadow boxing) is a visualization training. In other words, martial arts training is very similar to spiritual training.
I know only Japanese martial arts, but probably the same is Chinese martial arts.