King Bumi: Listen to me, Aang. There are options in fighting, called jing. It's a choice of how you direct your energy...
Aang: I know! There's positive jing when you're attacking, and negative jing when you're retreating...
King Bumi: ...and neutral jing when you do nothing! Neutral jing is the key to Earthbending. It involves listening and waiting for the right moment to strike.
I do not know about Earthbending, but it's definitely the key to spoon-bending.
