Dreaming Back to the Xia Dynasty: Scientific Cultivation Theory and Settings

What does the sentence in "Laozi" - "mystery is mysterious again, the door to all wonders", what exactly does it say? He said: "Xuan" is the tiniest, indivisible basic unit that makes up the universe. Some people say: Huang comes from Xuan, but is different from Xuan, so it should be called the "two qi of Xuan and Huang". Others say: Xuanhuang comes from the same origin but has different names, so it should be called "Xuanhuang Yiqi". The "Creation Jade Butterfly" is not originally in the shape of a butterfly, but a disk-shaped "Innate Jade Plate". Two pieces are missing, so it becomes butterfly-shaped. The information contained in it is the law of the operation of all things in the universe. It is said that Patriarch Hun Kun received a piece of the "Xiantian Jade Plate" and named it: "Xiantian Dudu". The remaining fragments are scattered to unknown locations.