What does Taoism mean by Tianmen Diguan, or that place of the human body?

In Taoism, there are about three kinds of views about Tianmen underground palace. The first kind of Tianmen refers to Baihui above the head, and the ground clearance refers to the perineum. Many people hold this view that the day after tomorrow is kung fu and belongs to the cultivation of Qi. The second view is that Tianmen refers to the hiding place of the gods, Kunlun Mountain in Tang Yin. The ground crown refers to the Tibetan sperm valley, or between the two kidneys, usually in Xiadantian. This concept, like the first one, is formed the day after tomorrow, because it sticks to the tangible place of the human body, so it is impossible to jump out. The last one is Taoist cultivation of immortals and innate kung fu. Tianmen refers to emptiness, and the ground refers to yin. The former needs to be made out of nothing, while the latter needs to know everything. If you want to know, you can take a more detailed look at the Taoist Dan Jing, the Southern School, the Western School and the Sanfeng School.