The Legendary Janitor
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?
Old Gao's Bitter Cultivation (8)
And even then, it was no small matter, being a High Tier Earth Grade Technique even when half completed.
Then, it was only years later, after rising to the position as a Grand Teacher that he had managed to collect the 'second part' of the technique, which could be considered a continuation that brought the technique all the way up to the Middle Tier Heaven Grade. The most important thing was that in this transition from first to second part, one didn't have to scatter their cultivation and start anew, but instead could directly transfer their cultivation, even growing stronger in the process, as the two parts of technique followed the concept of a caterpillar and a butterfly, allowing the cultivator to 'shed their cocoon' and even increase their talent to an extent in the early stages.