SENG-TS'AN, TAO-HSIN, FA-JUNG, AND HUNG-JEN:
The master succeeding Hui-k'o was Seng-ts'an (d. 606), who then taught Fa-jung (594-657) and Tao-hsin (580-651), the latter in turn passing the robe of the patriarchy to Hung-jen (601-74). The masters Seng- ts'an, Tao-hsin, and Hung-jen are honored today as the Third, Fourth, and Fifth Patriarchs, respectively, and revered as the torchbearers of Ch'an's formative years. Yet when we look for information about their lives, we find the sources thin and diffuse. One reason probably is that before 700 nobody realized that these men would one day be elevated to founding fathers, and consequently no one bothered recording details of their lives.
During the seventh century the scattered teachers of _dhyana _seem to have gradually coalesced into a sort of ad hoc movement--with sizable followings growing up around the better-known figures. A certain amount of respectability also emerged, if we can believe the references to imperial notice that start appearing in the chronicles. It would seem that the _dhyana_ or Ch'an movement became a more or less coherent sect, a recognizable if loosely defined school of Buddhism. However, what the movement apparently was striving to become was not so much a branch of Buddhism in China as a Chinese version of Buddhism. The men later remembered as the Third, Fourth, and Fifth Patriarchs have in common a struggle to bend Buddhist thought to Chinese intellectual requirements, to sinicize Buddhism. Whereas they succeeded only in setting the stage for this transformation (whose realization would await other hands), they did establish a personality pattern that would set apart all later masters: a blithe irreverence that owed as much to Chuang Tzu as to Bodhidharma.
When reading the biographies that follow, it is useful to keep in mind that the explicit details may well have been cooked up in later years to satisfy a natural Chinese yearning for anecdotes, with or without supporting information. Yet the fact that the _dhyana _practitioners eventually became a movement in need of a history is itself proof that these men and their stories were not complete inventions. In any case, they were remembered, honored, and quoted in later years as the legendary founders of Ch'an.