I watched it in the movie theater and didn't understand! ! ! ! !
I think the principle may be this:
pull the set, there is a sound. Then when it comes into contact with other people's weapons, the frequency of the sound varies with the location. There is always a position where the sound is rather strange, and then just follow it and shout "Break", and the weapon will be broken.
Ask the science geek to come and give a reliable statement! ! !
In addition, Dehua shouted "Break" when he knocked the man's fist with the mace, I was in pain at that time~~~
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