What kind of religion was the ancient esoteric religion and how did it come from?

Tantric Buddhism is the product of the combination of Buddhism and ancient Indian folk beliefs, especially Brahmanism. It was not until the seventh century that a relatively complete set of Confucian classics and teachings was formed that the true esoteric religion appeared. By the beginning of the eighth century, esoteric Buddhism had occupied a major position in Indian Buddhism. Tantric Buddhism is based on the philosophy of Mahayana Buddhism, with systematic mantras (mantras), Dalagni (the chief practitioner), rituals and folk beliefs, and emphasizes Dharma Buddhism, secret Buddhism, and becoming a Buddha with his own body (appearance and body), which constitutes his characteristics different from Buddhism. Tanism was introduced into Tibet in the eighth century and developed into today's Lamaism, but its influence in the Central Plains was not great.

Buddhism was introduced to Southeast Asia (including Sri Lanka, Myanmar, Thailand, Cambodia, Laos and so on). ) is the top Buddhism (also known as Southern Buddhism) among various Buddhist sects. Southern Buddhism paid attention to practice and discipline, so the Southern Buddhism Tripitaka ([Pali] Tripitaka) is also based on laws and regulations, and its tradition has continued to this day.