Vajrayāna, Mantrayāna, Tantrayāna, Tibetan Buddhism, Tantric Buddhism and Esoteric Buddhism are terms referring to the various Buddhist traditions of Tantra and "Secret Mantra", which developed in Medieval India and spread to Tibet, Bhutan, and East Asia. In Tibet, Buddhist Tantra is termed Vajrayāna, while in China it is generally known as "Chinese Esotericism" or "Esoteric Sect", and in Japan it is known as Mikkyō ("secret