Each has his own strengths. I think the second set is more tiring to fight, but it is aggressive, pays attention to fist attack, is practical to disassemble, and does not need to squat. The third set is intercepted in the first and second sets of enemy-catching fists, which has strong theoretical action and covers more techniques and boxing methods, but less leg attacks, especially the right leg, with only one forward push. Some moves are more lethal, for example, piercing the ear can hit the temple and cause death, and for example, scratching the wrist and hitting the elbow can break the elbow when the force is high. I feel that the shelving action in shelving is not ideal and should be revised. The above is purely a personal opinion, please criticize and correct me.