[f12] This reminds one of the remarks made by the master Ten (Chan), of Hofuku (Pao-fu), who, seeing a monk approach, took up his staff and struck a pillar, and then the monk. When the monk naturally cried with pain, said the master, “How is it that this does not get hurt?” (See Chinese Notes, [1.25].) [f13] _Hekiganshu_ is a collection of one hundred “cases” with Seccho’s (Hsüeh-tou) poetical comments and Yengo’s partly explanatory and partly critical annotations. The book was brought to Japan during the Kamakura era, and ever since it is one of the most important text-books of Zen, especially for the followers of the Rinzai school. [f14] Gutei was a disciple of Tenryu (T‘ien-lung), probably towards the end of the T‘ang dynasty. While he was first residing in a small temple, he had a visit from a travelling nun, who came right into the temple without removing her headgear. Carrying her staff with her, she went three times around the meditation chair in which Gutei was sitting. Then she said to him, “Say a word of Zen, and I shall take off my hat.” She repeated this three times, but Gutei did not know what to say. When the nun was about to depart, Gutei suggested, “It is growing late, and why not stay here over night?” Jissai (Shih-chi), which was the name of the nun, said, “If you say a word of Zen, I shall stay.” As he was still unable to say a word, she left. This was a terrible blow on poor Gutei, who pitifully sighed: “While I have the form of a man, I seem not to have any manly stamina!” He then resolved to study and master Zen. When he was about to start on his Zen “wanderings” he had a vision of the mountain god who told him not to go away from his temple, for a Bodhisattva in flesh would be coming here before long and enlighten him in the truth of Zen. Surely enough a Zen master called Tenryu (T‘ien-lung) appeared the following day. Gutei told the master all about the humiliating experience of the previous day and his firm resolution to attain the secrets of Zen. Tenryu just lifted one of his fingers and said nothing. This however was enough to open Gutei’s mind at once to the ultimate meaning of Zen, and it is said that ever since Gutei did or said nothing but just holding up a finger to all the questions that might be asked of him concerning Zen. There was a boy in his temple, who seeing the master’s trick imitated him when the boy himself was asked about what kind of preaching his master generally practised. When the boy told the master about it showing his lifted little finger, the master cut it right off with a knife. The boy ran away screaming in pain when Gutei called him back. The boy turned back, the master lifted his own finger, and the boy instantly realised the meaning of the “one finger Zen” of Tenryu as well as Gutei.