Ancient Chinese martial arts were actually murderous arts, so why have they fallen out of favor?

Chinese martial arts in ancient times, is a kind of occupation, and Japan is the same as the "professional samurai". The practice of winter training, summer training three volts, after the practice can be examined martial arts, the examination can become a military official. Even if you don't become an official, you can still become a soldier, and if you do, you can live on a military salary. If not, you can go to the dart board or give people a housekeeper. If you really can't, you can also sell art on the street to make a living. If you are not lucky, you can go to be a gangster to fight against the Qing Dynasty and restore the Ming Dynasty to change your destiny. In short, as long as you can concentrate on practicing martial arts can be a career. In the Republic of China, the promotion of martial arts, the national martial arts museum, this is the last group of modern traditional martial arts "professional warriors", and after that there is no longer.