 So in Wing Chun, what you learn is to develop this tinging or this listening energy so that with your skin, you can feel the force of the person. You can feel it whether it's going this, left, going right, going up, going down, going forward, going back. And what makes this so powerful is that you don't need to use your eyes to listen, right? So in the same way, you don't need to use your eyes to feel the energy. I have my eyes closed, you're pushing in, I can use it against him, or you move somewhere else, I can use that against him, right? Or he does something else with it, goes another way, he collapses it, then I move forward. So there's different ways of using your listening, tinging, energy skills. In Wing Chun, we use the chi-sao or sticky hands training in order to develop this skill, and it also exists in many other martial arts such as tai chi, even jujitsu or judo.