. . . in which Ch'an is imported to Japan by traditional Buddhists disillusioned with the spiritual decadence of existing Japanese sects. Through a fortuitous association with the rising military class, Ch'an is eventually elevated to the most influential religion of Japan. Before long, however, it evolves into a political and cultural rather than a spiritual force. Although some Japanese attempt to restore Ch'an's original vigor by deliberately attacking its "High Church" institutions, few Japanese Zen teachers respect its original teachings and practice. Japanese teachers contribute little to the Ch'an (Zen) experience until finally, in the eighteenth century, a spiritual leader appears who not only restores the original vitality of the faith, but goes on to refine the koan practice and revolutionize the relationship of Zen to the common people. This inspired teacher, Hakuin, creates modern Zen.
There is a twelfth-century story that the first Japanese monk who journeyed to China to study Ch'an returned home to find a summons from the Japanese court. There, in a meeting reminiscent of the Chinese sovereign Wu and the Indian Bodhidharma some seven hundred years before, Japan's emperor commanded him to describe the teachings of this strange new cult. The bemused monk (remembered by the name Kakua) replied with nothing more than a melody on his flute, leaving the court flabbergasted.1 But what more ideal expression of China's wordless doctrine?
As in the China entered by Bodhidharma, medieval Japan already knew the teachings of Buddhism. In fact, the Japanese ruling classes had been Buddhist for half a millennium before Ch'an officially came to their attention. However, contacts with China were suspended midway during this time, leaving Japanese Buddhists out of touch with the many changes in China--the most significant being Ch'an's rise to the dominant Buddhist sect.2 Consequently the Japanese had heard almost nothing about this sect when contacts resumed in the twelfth century. To their amazement they discovered that Chinese Buddhism had become Ch'an. The story of Ch'an's transplant in Japan is also the story of its preservation, since it was destined to wither away in China.