The team stopped next to a huge tiankeng. The tiankeng was bottomless, and there were bursts of shrill sounds like howling ghosts and wolves coming from inside, making people feel like they were in the mouth of hell.

Any form of formation and mechanism needs to have an operating hub, and the small Zhoutian Xingchen formation is no exception, but this type of formation can absorb the energy of the world on its own, and theoretically it can run forever, which belongs to the true sense of the word. perpetual motion machine.

Its operating hub is a quantum sequence

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