Tolong jelaskan mengenai Sumber dari Chan

{{Citation | last =Buswell | first =Robert E. | year =1991 | title =The "Short-cut" Approach of K'an-hua Meditation: The Evolution of a Practical Subitism in Chinese Ch'an Buddhism. In: Peter N. Gregory (editor) (1991), Sudden and Gradual. Approaches to Enlightenment in Chinese Thought | place =Delhi | publisher =Motilal Banarsidass Publishers Private Limited}}