Master Yang Chengfu had said, “Really need to relax, relax the mind and whole body, or you are just a stick for opponent to push. The relaxed skill is the hardest thing to learn. If you can master the relaxed skill, the sky is the limit!” Another way to express relaxed skill is the feeling of your whole body, inclusive of joints, muscles and skin that has no sign of tensed sensation. There is an old saying “softening the waist until it seems boneless. If boneless, there is no muscle that cannot be relaxed.” If one practises Taiji pushing hands without relaxed skill, one can never gain the pure internal Qi energy. The reason is that if one is not relaxed, one is actually using muscular force and not Qi energy. The Taijiquan essay clearly had said, “Once there is any slightest use of muscular energy, it is not Taiji. It is other form of Martial Arts.” One can be a mastery of this Martial Arts, but it is not recognised as Taiji Martial Arts because one does not understand the meaning of relaxed skill. “Relaxed skill” is in the mind set. One needs to consciously apply this mind set during Taiji practice until it becomes a second nature of oneself. “Relaxed skill” is really an advanced skill set in practising Taiji. The more one can achieve the relaxed skill, the higher level of achievement in Taiji one can attain.