At least 90 percent of Taijiquan practitioners around the world only practice at the level of form. There is no energy flow, even though they may talk about "chi". This situation leads many to regard "chi" as an abstract concept. Even at the form level they don't practice the form correctly. There is no waist and knee rotation; they push their forms to the extreme; and they are not relaxed, often with mouth closed. This also occurs in modern Wushu performance.
Grandmaster Wong demonstrates Taijiquan at all three levels. At the energy level there is also good form and presence of mind. At the mind level, besides good form and flowing energy, the practitioner's mind is very clear. This allows energy and mind to expand beyond the physical body.