Be sure to use the strength of the waist and twist the hips, which will increase the strength many times.

As long as you keep your posture basically correct,

Let me analyze it for you from the perspective of fast hard songs.

Come on, when punching sandbags, sometimes you have to punch fast, fast and powerful. Fast boxing is basically the kind of boxing that I suggest you bunt, but I don't fully understand it yet.

Tough, you must have strength, do some gravity training properly, and strengthen the training of speed and reaction. It is not a problem for you to get rid of people.

But I hope your starting point is that you don't know how to fight. We should carry forward the martial arts spirit of keeping fit and upholding justice.