Most people don't choose reincarnation. Reincarnation finds their way to them. Perhaps they did something great in their life. Or maybe truck-sama wasn't looking where it was going. But without fail, those who reincarnate are destined for something great. A new life where everything changes for the better. But... Reincarnation isn't always the greatest thing. Sometimes you just draw the short end of the stick. Di Tou just happens to have drawn the shortest stick. Pulled out of his life randomly. Taken by a crazy old eccentric man not as a disciple, but as a body double?! And a janitor body double no less?! Grasping a system to find... It's a JANITOR SYSTEM!? Truly, how unlucky can one get?
Still, although this lead had a lot of problems, it showed a lot of promise. It was a classic case of high risk high reward! And the risk in this case was just the likelihood of failure, not any demerit to him. In order to pursue this lead to the end, Di Tou had two options, the first was to continue going around visiting various Realm Fractures in hopes of finding one that was potentially close to Earth and following the connection there.
But that was like searching for a needle in a haystack, it was entirely up to luck.
The other method was to raise his cultivation. The soul was primarily strengthened in the Nascent Soul Stage, which Di Tou had already passed. While it still grew a bit stronger in every subsequent stage and minor realm, it was mainly small changes, and there were no qualitative changes.