Starting Immortality by Upgrading Buildings

With a start like this, he originally thought he would most likely walk the path of "do not despise the youth for being poor," only to remain poor in middle age and poor in old age. But to his surprise, he unexpectedly awakened a building upgrade panel. [Fish Pond lv1: Fingerling growth speed +20%, Semi-Spirit Fish have a certain chance to evolve into Spirit Fish] [Cave Dwelling lv1: Self-healing walls, basic dust-repelling barrier, nighttime spiritual energy concentration +20%] [Chicken Coop lv1: Spirit eggs produced daily, containing trace amounts of spiritual energy, capable of sustaining fasting] [Pigpen lv1: Spirit pigs gain a hundred pounds of muscle every seven days, flesh contains body-tempering medicinal properties, and can accelerate wound healing] [Spirit Field lv1: Crop cycle -30%, output contains faint wood spiritual energy] [...] From the most basic [Fish Pond] to the cultivation world's [Alchemy Room] and [Artifact Refining Room], as long as it was Ji Yuan's building, everything could be upgraded. "Cultivation, cultivation; what is being cultivated is not fighting and killing, but longevity and eternal vision." Many years later, when the chosen geniuses fell, the holy lands decayed, and the great powers perished, only "Heavenly Venerable Ji" transformed into immortality, evergreen for all eternity.