Sun Tzu also talked of how a commander should use two thrusts, either of which could attain the objective. But perhaps the most significant element in Sun Tzu is the concept of cheng and ch’i, the orthodox and the unorthodox, the traditional and the unexpected. A simplistic explanation of cheng and ch’i comes from General George Patton, who in World War II said his plan for attacking the Germans was to “hold them by the nose and kick them in the ass.” Holding them by the nose is the cheng. Kicking them in the ass is the ch’i.
