What's the use of learning Tantric (East Secret) characters? What special function does it have?

Because the transfer of sugar rice (winter rice) was passed from master Huiguo to master Konghai. Hui Guo is proficient in Daoism, Eight Diagrams, Yi Xue, Yin and Yang, Five Elements and so on. So there are some Taoist things in tantric Buddhism. Including the Tibetan secret is also because the Taoist priest brought into Tibet by Princess Wencheng merged with the secret method handed down by Lotus Peanut. The so-called "secret" has three layers, and I'll tell you the shallowest layer: as complex as the universe, unfathomable and boundless. Therefore, to learn the secrets, we must first learn the Diamond Sutra of the Heart Sutra for five years. Understand that everything is like a dream As for the role, there are both physical and psychological aspects. Therefore, due to complexity, few people generally achieve "tacit understanding between me and myself". If you want to learn, you can learn the Prajna Sutra and only know the Dharma first. I see, but that's all. Idealism and materialism are the same: be a good person and be a Buddha!