Karma in Buddhism (百丈野狐). The story of the koan is about an ancient Zen teacher whose answer to a question presents a wrong view about karma by saying that the person who has a foundation in cultivating the great practice "does not fall into cause and effect." Because of his unskillful answer the teacher reaps the result of living 500 lives as a wild fox. He is then able to appear as a human and ask the same question to Zen teacher Baizhang, who answers, "He is not in the dark about cause and effect." Hearing this answer the old teacher is freed
Buddhism in Vietnam (, "Collection of Outstanding Figures of the Zen Garden") has been the dominant text used to legitimize Thiền lineages and history within Vietnam. However, Cuong Tu Nguyen's "Zen in Medieval Vietnam: A Study and Translation of the Thien Tap Anh" (1997) gives a critical review of how the text has been used to create a history of Zen Buddhism that is "fraught with discontinuity". Modern Buddhist practices are not reflective of a Thiền past; in Vietnam, common practices are more focused on ritual and devotion than the Thiền focus on meditation. Nonetheless, Vietnam is seeing a steady growth in Zen