The Heaven and Earth Re-creation Furnace was originally a treasure of the Hidden Dragon Ancestor. After being abandoned by him, it went through many trials and tribulations before arriving in the Dark Sea and ending up in the Western New Bull Continent. This treasure later became Creation Little Five's site for Dao Integration.
He was self-taught, figuring out that achieving Dao Integration with a magical artifact was an alternative path to immortal cultivation. This furnace contained the Dao of Creation, and Creation Little Five, being a creation himself, was like a fish in water when he integrated with the Dao inside the cauldron.
The Hidden Dragon Ancestor's brand on the Heaven and Earth Re-creation Furnace had long been erased, and it had become Creation Little Five's own treasure. That was why he was able to replicate so many of himself within it.
Ever since his last death, he had been constantly worried about repeating his past mistakes, so he had prepared tens of thousands of backups for himself within the Heaven and Earth Re-creation Furnace.