Pigu and meditation are completely different things, so don't confuse them. Bigu is a cultivation method from Taoism. Its principle is to cut off the intake of regular meals and open other channels for the body to obtain energy through the practice of specific exercises, so as to achieve the purpose of fitness and health preservation. However, we should pay special attention to the fact that the practice of crossing the valley must be trained by special techniques, and the practice of crossing the valley in Taoism is a natural phenomenon that will appear only after the human body reaches a certain level of cultivation, and it is not deliberately sought, let alone practiced by ordinary people, otherwise it will be harmful! The focus of meditation is to cultivate the mind. Through various methods of training, our hearts become more and more calm and peaceful, and then we can gain insight into the true meaning of life. I heard that there is a course of "free meditation", which is to teach traditional meditation in a modern way and learn from it.