I Merged with a Dungeon from the Start, and You Still Say I Didn't Cheat?

I woke up to find myself an undercover agent for the Six Fan Gate, hiding in a bandit den. Caught red-handed. I was about to be executed by slicing when... Luckily, at the crucial moment, I awakened my golden finger: the Compendium of All Things. It can fuse anything with anything! From the start, I fused with a dungeon and gained a pocket dimension. Not only did I escape safely, I also emptied the bandits’ treasury. I fused with a ten-thousand-year-old ginseng and gained an immortal body. Even if my head gets chopped off, I can put it back on. I fused with an ultimate immortal artifact and gained a body that lives forever and cannot be destroyed. When heaven and earth are destroyed, I will remain. When the sun and moon decay, I will endure... With one Compendium of All Things, I can fuse the primordial universe, heaven and earth, and all things within them. If inanimate objects can be fused, then what about... stars?! Ye Wu looked up at the starry sky...