They believed in a cosmic egg, or world egg, that the sky, Earth, and all of existence hatched from.
他们相信存在一个宇宙蛋,或世界蛋,天空、地球和所有的存在都是由它孵化出来的。
古生物科普
Instead of early humans, the rocks of the Gobi yielded a trove of dinosaur fossils that were completely new to science, including the world's first recognized dinosaur eggs.
The world egg, cosmic egg or mundane egg is a mythological motif found in the creation myths of many cultures and civilizations. Typically, the world egg is a beginning of some sort, and the universe or some primordial being comes into existence by "hatching" from the egg, sometimes lain on the primordial waters of the Earth.