Nothing is indifferent, and the true qi goes with it. Keep your spirit inside and stay away from illness. The word "keeping in good health in winter storage" is calm and empty, and the true qi follows. Keep your spirit inside and stay away from illness. This is an important idea of TCM health preservation, which means to keep your body quiet and restrained in winter and avoid consuming too much energy and heat in your body to keep your body healthy. Specifically, we should keep calm and emotional stability, avoid overwork and strenuous exercise, and at the same time pay attention to keep warm and protect our body from cold evil.