'In Traditional Chinese Medicine theory, we have been clarified weather connects with the human body deeply. In spring and summer season, everything is growing, and in autumn and winter, everything is hiding. Growing and hiding are the basis of life - only when growing alternates with hiding can the universe continue developing. There is an important thing missing though, and without this thing, growing and hiding cannot alternate. This thing is the key to keeping everything flowing. The Chinese call it Qi (Chi / Energy / 氣).