There are any traditional Chinese martial arts that can be self-taught, and I don't want my family to know.

In the traditional Chinese martial arts, self-taught kung fu: commonly known as basic skills: Za Ma Bu, Za Bao Bu, pressure leg, low pressure leg, high pressure leg, split (horizontal split, vertical split), kicking leg (positive kicking leg, external swing leg, internal swing leg, combinations (straight straight pendulum, hook pendulum, pendulum swing hook) sandbagging, flip (front flip, back flip, front flip, back flip, side flip, swallow flip) and other basic martial arts skills. The practice of martial arts in the ability to endure hardship, can be persistent. Persistence. Learned these basic skills, and then find a good instructor to guide, you can be out of the fist, out of the leg into the road.