練劍莫先於煉气*
"Listen, swordmanship is the discipline and training of the Great Vitality. So you begin this study by training the ch'i by means of technique. After your beginning studies, you will discipline your ch'i, but move away from technique; yet, there should be no point where you try your hand vacantly. You should become mature in your discipline of ch'i, and master the mind"**
气 is a notion very particular to the Chinese culture, not only a polysemous word, but also a riddle to solve in the old practices. That makes it a complex and hard notion to deal with. But since it is, in most cases, an integral part of Chinese martial arts, leaving out this notion would be like wanting to make wine in France without taking into consideration the "terroir".