The foundation of the Vairocana Dharma body lay in the alchemy body. Its ultimate secret lay in being able to draw upon the Sun's true fire to forge one's own body, completely burning the spirit in one's body one by one, and finally reaching the glazed realm of the pure physical body. Therefore, the Vairocana Dharma body was also known as the Vairocana Glazed Dharma Golden Body. Once this golden body forms, the body would be like glass, invulnerable to all Dharma!
Was It strong? Yes!
However, cultivating this Dao was extremely difficult. Firstly, one needed to activate the grand sun's primordial fire to burn one's body at noon, causing extreme pain. Secondly, one needed a soul protection technique or treasure to protect the safety of one's soul. Otherwise, if one was not careful, one's soul would turn to ashes and die.