Lieh Yü-k'ou instructed Poh-hun Wu-jên in archery. Drawing the bow to its full, he [the teacher] placed a cup of water on his elbow and began to let fly. Hardly was one arrow out of sight ere another was on the string, the archer all the time standing like a statue. Poh-hun Wu-jên cried out, “This is shooting under ordinary conditions; it is not shooting under extraordinary conditions. Now I will ascend a high mountain with you, and stand on the edge of a precipice a thousand feet in depth, and see if you can shoot like this then.” Thereupon Wu-jên went with his teacher up a high mountain, and stood on the edge of a precipice a thousand feet high, approaching it backwards until one-fifth of his feet overhung the chasm, when he beckoned Lieh Yü-k'ou to come on. But Yü-k'ou had fallen prostrate on the ground, with the sweat pouring down to his heels.