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?
As for the name of the formation…
The formation initially had no name, and the initial creator was unknown. What had happened was a long time ago, there was a rather famous master by the name of Zhang Wu who painted eighteen lifelike sparrows that seemed to jump off the page. Not only that, each sparrow was painted following a different Dao that Zhang Wu had pursued in his life time, making it not only an invaluable piece of cultural heritage but also a cultivation treasure.