A classic work of Ch'an Buddhism in Chinese 8 centrury. Enlightened Ch'an Master Yongjia (665-713), upheld the banner of Ch'an, which inspiring people to figure out the real heart of one's own and see through the real nature of one's own, to illuminiate sentiment beings. He said : "The so-called explicit insight—has no object, no person or Buddha." "The big elephant does not wander himself on the way of bunny; the big enlightenment does not constrain itself within trivialities......"