At first only one law existed in the universe, the Law of Chaos. The Law of Chaos also serves as the base of every Great Dao.
This law was then divided into 2 Superior Laws, the Temporal and Spatial Aspects, or Great Laws, of the Law of Chaos
These 2 Superior Laws, the two Original Great Laws, were then further split into the 10 laws we know of in Swallowed Star.
The Temporal Side was split into the Law of Time, the Law of Light, the Law of Lightning and the Law of Wind.
The Spatial Side was split into the Law of Space, the Law of Gold, the Law of Wood, the Law of Water, the Law of Fire and the Law of Earth.
Due to the nature of the Law of Space and the Law of Time and their deep connection with their Origin Law, these two Laws are considered the Upper Laws and are stronger than the other Eight Laws, the Lower Laws.
At first an individual can perceive their innate affinity towards a certain Law. Often this affinity can be turned into an ability.
Afterwards an individual would try to perceive the Laws. The first step in doing so would be obtaining the corresponding Domain and evolving this to the 9th Stage.
Should this be successful, then the cultivator will receive the recognition of the law, allowing one to enter the Law Ocean of the recognized law. Due to being closer to the Origin of the Law, cultivation speed will be enhanced and one can start to perceive a sliver of the actual Original Law. Only then will an individual be able to actually perceive a fraction of the law.
In order to be able to become a Sector Lord a certain threshold of a lower law will need to have been understood.
In order to become an Undying a Lower Law must have been comprehended.
In order to become a Universe Knight either the Law of Space or Law of Time will need to have been comprehended.
In order to become a Universe Master either both the Law of Space and Law of Time must have been comprehended or one must have fused a Lower Law with an Upper Law (e.g. Beast God Fusion)
In order to become a True God one must either develop his Genes beyond the limit (Power Route) or have comprehended the laws to the extreme (Law Route).
With extraordinary understanding Laws can also be fused together. This will vastly improve ones own ability and being able to fuse and integrate two laws is considered a peerless genius.
There are multiple stages according to ancient civilization in the Universe Ocean. (Groups that have perished after Reincarnation Eras).
First Stage: Fusing an Upper Law with a Lower Law: Gold & Space; Water & Space; Water & Time; Wind & Time; Wind & Space and more.
Fusing a Lower Law with its corresponding Upper Law is easier, however should one succeed fusing the other Upper Law, then the 2nd fusion Stage will be a lot easier.
There is also the possibility of fusing Two Lower Laws, however this is generally considered a "Waste of Time" as a combination of an Upper and Lower Law is stronger.
There is also the possibility of fusing both the Law of Space and the Law of Time. This is considered extremely difficult as one would have to understand both Upper Laws to the same degree.
Second Stage: Fusing two Lower Laws with an Upper Law or fusing a Lower with both Upper Laws: Gold & Space-Time; Water & Space-Time; Water-Fire & Space; Water-Wood & Space; Wind-Fire & Space.
Fusing two Lower Laws of the same Upper Law with that Upper Law is easier than mixing two Lower Laws from different Upper Laws.
There is also the possibility of fusing Three Lower Laws, however this is generally considered a "Waste of Time" as a combination of Upper and Lower Laws is stronger.
Fusing the two Upper Laws is considered extremely difficult, but very rewarding.
Third Stage: Fusing another Law. e.g. you have already fused Space, Time & Gold and then you add Fire into the Mix to achieve Space, Time, Gold & Fire Fusion.
Fourth Stage: ...
Fusion of the Temporal Side of the Law of Chaos: Should the Law of Time be fused with all its Lower Laws, the Law of Light, the Law of Lightning and the Law of Wind, then the Temporal Side of the Law of Chaos can be achieved.
Fusion of the Spatial Side of the Law of Chaos: Should the Law of Space be fused with all its Lower Laws, the Law of Gold, the Law of Fire, the Law of Water, the Law of Earth and the Law of Wood, then the Spatial Side of the Law of Chaos can be achieved.
Fusion of the Law of Chaos: Should all 10 Laws be fused and completely integrated with one another, then the Law of Chaos, the Origin of all other Laws, will be achieved.