The Comet Realm allows one to initially come into contact with the Heaven and Earth Laws of the Bright Realm, also known as runes, which are the embodiment of these laws.
This level only allows for the application of these laws, not full comprehension, which can only start at the Black Cave Realm. This is what Hongyue referred to with the five steps, ten steps, and a thousand steps.
In the Black Cave Realm, each branch of the Great Dao of Heaven and Earth can be stabilized with just five steps, allowing one to open a second black hole, a third, a fourth, until reaching the extreme number of nine. Then one can turn back and elevate each black hole to ten steps, preparing to impact the Chaos Realm.
It only means preparation, not a guaranteed success.
Zhou Heng's physique advanced into the Comet Realm, meaning he finally qualified to utilize the runes of the Bright Realm!
