Primordial!
As the leader of three thousand Great Worlds and the origin of the cosmic starry sky, this world is incomparably vast, with strict laws, an expansive Heavenly Dao, and boundless spiritual mechanisms!
This world is unlike any other, or rather, all worlds in the Great Thousand Universe take the Primordial as a blueprint, striving to imitate it and move toward it. Though there are countless cosmic starry sky worlds, they have never been able to free themselves from the confines of the Primordial. In the birth of countless worlds, no matter how peculiar they may be, there are always similarities to the Primordial.
The Primordial possesses three thousand Daos, the most complete law system, the most perfect cycle of life and death, the best Cave Heaven Blessed Lands and cultivation resources, and various environments suitable for all living beings to survive!
