 Buddhism is not indigenous to China, and it has a long and rich tradition of thought and practice in India and in areas other than China. This brief section will focus on ethical aspects of the most distinctive form of Buddhism that developed once it was introduced to China: Chan Buddhism, or as it came to be known later in Japan, Zen. It should be noted, however, that prominent forms of Chinese Buddhism also include Tiantai and Huayan. All three forms of Chinese Buddhism developed in interaction with indigenous Chinese thought, especially Daoism. Chan developed partly as a response to the perception of some Chinese Buddhists that Tiantai and Huayan had developed in overly scholastic directions with proliferating metaphysical distinctions and doctrines that hinder rather than aid Enlightenment.