Tibetan secret: After Buddhism was introduced into Tibet, people who preached in Tibet were called "Tibetan Buddhism". Tibetan Buddhism is dominated by Vajrayana. It was first introduced in the fifth century, that is, during the reign of Ratedonier, the king of Tibet. It is said that the four treasures that fell from the sky at that time, such as "confessions of a hundred worships", "stupa", "six-character mantra" and "dharma", all belonged to India's Vajrayana, thus opening the door to Tibetan Buddhism.

Tommy: The formal introduction of pure esoteric religion into China began in the Tang Xuanzong period. During the reign of Xuanzong Kaiyuan, three Indian tantric masters, Sumitomo Buddha and King Kong, came to China to promote the secret method, which is the famous "three masters of Kaiyuan" in history. Tang Mi was formed through the development of a series and returning to China. Also known as tantra, tantra, yoga, vajrayana, to tell the truth, vajrayana, secret hiding, public hiding, forever hiding, Dalagni hiding, secret sharing and fruit sharing. This case was taught by the esoteric secret method of Dharma Tathagata, so it was named after the true religion. According to the instructor's observation and practice of Sammi Yoga (corresponding), the practitioner gains the knowledge (achievement) of the land.