<https://s.mj.run/KCqk_57W_bQ> <https://s.mj.run/JMSpSGAORrM> <https://s.mj.run/xmho3YmQbhg> <https://s.mj.run/Uxrt3JlJa9Y> <https://s.mj.run/U-tYq7iMvx0> The knife is held at chest height, the line is cleaner and easier to understand, and the knife is not completely taken out, but only a little