This universe contained countless numbers of spatial dimensions.
Some of these spatial dimensions could give rise to Great Worlds, allowing all sorts of sentient life to mature vibrantly in it.
However, there were spatial dimensions that were empty and desolate. These dimensions only contained endless amounts of rubble and dust. They were as quiet as cemeteries.
Zhulong's Alternate Dimension Tomb was such a dead spatial dimension. After finding it, he had seared its location into his dantian, allowing for him to use spatial dimension laws to open up a tunnel to this space. By sucking an enemy into it, the enemy would forever be stuck in this alternate dimension, floating around endlessly, until his death.
However, it was extremely difficult for Zhulong to open this spatial tunnel with his abilities. He needed to use a mystic technique that would harm his body in order to accomplish it.
