Cultivating immortality begins with formations.

Lu Yuan transmigrated to a world of cultivation, using arrays to protect his path, yet his progress was fraught with difficulty. Just as he was about to give up, he awakened the Life-Saving System, which allowed him to infuse his lifespan to enhance his spell proficiency. He could exchange his life for the Dao, his lifespan for cultivation. While others toiled for years to comprehend the Dao, he only needed to infuse his lifespan to reach perfection. ...Starting with arrays, establishing himself in the marketplace, and then gradually working towards his goal, the path to immortality was not far off.