Huai-hai seems to have been a kindly man, warm and personable, not given to the roughhouse methods of some of his contemporaries. Instead of flamboyance, we find a friendly type who concentrated on guiding a community of disciples (sometimes called a "Zen forest") and giving a helping hand to all. We will pass over the many other anecdotes involving his stay with Ma-tsu and turn instead to his more significant contributions to the growth of Ch'an.5 These fall into two major categories: First, he founded the first wholly Ch'an monastery and for it formulated a set of monastic rules that are today still respected in Zen monasteries; and second, he was one of the first Southern Ch'an masters to explore the psychology of "sudden enlightenment" and to write a lucid analysis of the mental preparation it required. Before detailing Huai-hai's contribution to monastic Ch'an, perhaps it would be well to recall briefly the character of the traditional Buddhist monastery in China during the T'ang (618-907) era. Buddhist monasteries had long been governed by a set of rules known as the _vinaya_. These rules prescribed everything from the color of the robes for the priesthood to the penalties attached to eating onions or garlic (forbidden primarily because they were thought to be stimulants, not necessarily because of their social liabilities in close quarters). There were also some specific and quite solemn commandments--for example, monks or nuns could be expelled from the community for stealing, killing, lying, or sexual congress. Originating in India, these rules had been subsequently transplanted to China, where they gradually were made even more strict, although their enforcement apparently was not always rigorous. Perhaps because of this laxity the T'ang regime established penalties even more severe than those imposed by the Buddhist authorities. For example, whereas the _vinaya_ indirectly countenanced the eating of meat (through the loophole that all charitable gifts must be accepted since they give the laity merit, and if a gift happened to be meat it still had to be consumed for the sake of the donor), the T'ang government prescribed thirty days of hard labor for monks caught partaking. Since citizens entering Buddhist orders were taken off the tax rolls, the government took pains to ensure that monastic life was rigorous enough to discourage simple tax dodgers.7 Although the Chinese Buddhist schools were almost all members of the side of Buddhism known as Mahayana, they apparently followed the rules of Theravada Buddhism, since the latter were clearer and more easily understood.8 Huai-hai decided to merge the two sets of rules and from them to devise a new set of guidelines specifically for Ch'an, thereby creating a code of monastic discipline that eventually would rule Zen behavior throughout the world.