Wu wei refers to the cultivation of a state of being in which our actions are quite effortlessly in alignment with the ebb and flow of the elemental cycles of the natural world.
It is a kind of “going with the flow” that is characterized by great ease and awareness, in which—without even trying—we’re able to respond perfectly to whatever situations arise.
The character tong (通) describes any kind of communication which is free from obstruction; it is particularly used for the spreading and free movement of qi, but can describe communication between people as much as free-flow within the organism. In classical Chinese it is to open the way, to open dialogue, to allow the mingling of different things, ideas, people. It is to give free access to something; to penetrate and to permeate.