· Does not have (Mu)
Has a dog the Buddha Nature or not?" Chao-chou said, "Mu!" (Actually, he probably said "Wu," which is the Chinese for Mu, a Japanese word. Mu is usually translated "no," although the late Robert Aitken Roshi said its meaning is closer to "does not have." Zen originated in China, where it is called "Chan." But because western Zen has been largely shaped by Japanese teachers, we in the West tend to use Japanese names and terms.) SOURCE: What is Mu in Zen