Qi-Gong is the mental practice of the Shaolin Kung-Fu practioneers.
They strengthen their mental energies 'Qi' Which comes from their Dan Tien.
This energy they make strong enough, until they can use it to be able to take more dammage and do certain things like throw a needle and burst glass; or smack apart a big stick with their hand.
- "Hey yo, how did that Shao-something monk tear that big stick apart with his hand?"
- "He practices Qi-Gong."