Tai Chi: Fascia, Song & Qi – What is the Difference?

What is the difference between Fascia, Song and Qi in Tai Chi? In the world of Tai Chi, it is not uncommon to witness someone appear effortlessly powerful—moving a partner with what seems like only a light touch. But what is really happening beneath the surface? Is it Qi? Is it Song? Is it a specialized type of physical connection such as fascia engagement?

In this video, Susan Thompson breaks down and defines three foundational internal principles that are often misunderstood or conflated: Fascia Connection, Song, and Qi. While each of these terms is frequently used in Tai Chi circles, they represent distinctly different mechanisms within the body—and understanding these distinctions is critical for anyone seeking deeper skill and authentic internal development.

You will see each principle demonstrated individually with a live partner. These are not theoretical ideas—each is applied in real time to show how it influences the partner’s structure, stability, and responsiveness. The partner used in this demonstration is non-coached, has no previous exposure to Tai Chi, and does not know what to expect, offering a clear, honest view of the internal effects of each principle.