Wu 1
‘Eternal Non-Being’ is that which is opposed to being of material objects; refers to the essence of Tao, the first principle. (Lao Tzu). — H.H.
Fuente: The Dictionary of Philosophy
Wu 2
Creatures; things; matter; the material principle; the external world; the non-self; objects of the senses and desires; affairs. — W.T.C.