This method is not meant for you to think about the meaning of a
kung-an as if the kung-an were a question for intellectual solution. Speaking of the hua-t’ou method, [Dahui Zonggao] taught his disciples to kill the “sneaky mind” with a cold-blooded hand. According to him, the first principle of Ch’an practice is to empty one’s mind. One must first paste the two words “life-death” on the forehead, and regard them as seriously as if one owed a debt of a million taels. In day or night, while drinking or eating, traveling or staying at home, sitting or lying, entertaining friends, in a quiet moment or at a noisy hour, you must hold on to the hua-t’ou.