Every universe has its own specialty and uniqueness, often reflected in their names. The universe where Sam and his family reside is called the Nirvana Universe.
This universe is still in the first phase of its life. It used to be in its second phase, but it regressed because the Universal Tree gave birth to Sam.
The Universal Tree expended a lot of energy and even got hurt in the process because it violated the rules imposed on the universes by the system of reality to produce a son.
After the regression, the growth of the universe slowed considerably.
Right now, the Nirvana Universe only has five worlds with civilizations, including the cultivation world where Sam and his family live.
It also means Sam has five sisters who are world trees, including Elysia.
They were currently standing in front of Sam, crossing their arms and looking at their only brother with pouting expressions.
