Buddhism deity and its associated mandala. Another element of Tantra is the need for ritual initiation or empowerment (abhiṣeka) by a Guru or Lama. Some Tantras like the Guhyasamāja Tantra features new forms of antinomian ritual practice such as the use taboo substances like alcohol, sexual yoga, and charnel ground practices which evoke wrathful deities. Zen Buddhism (禅), pronounced "Chán" in Chinese, "seon" in Korean or "zen" in Japanese (derived from the Sanskrit term "dhyāna", meaning "meditation") is a form of Mahayana Buddhism found in China, Korea and Japan. It lays special emphasis on meditation, and direct discovery of the Buddha-nature.
Reality in Buddhism of interdependent origination. One of the most discussed themes in Buddhism is that of the emptiness ("sunyata") of form (Pali: "rūpa"), an important corollary of the transient and conditioned nature of phenomena. Reality is seen, ultimately, in Buddhism as a form of 'projection', resulting from the fruition ("vipaka") of karmic seeds ("sankharas"). The precise nature of this 'illusion' that is the phenomenal universe is debated among different schools. For example; Buddhist sutras devote considerable space to the concept of reality, with each of two major doctrines—the Doctrine of Dependent Origination ("pratitya-samutpada") and the Doctrine of Cause and Effect ("karma" and