Immortality Begins with Upgrading the Cave

Mortal StreamFarming StreamGoudao StreamBusiness StreamSlow Heat Traveling through the world of immortality, although he was lucky enough to become an immortal, his qualifications were mediocre and he was not popular. I thought I would be confused for the rest of my life, but accidentally awakened the cave upgrade system. [First-level primary spiritual effect in the training room: the spiritual energy concentration reaches the first-level low-grade] [First level primary spiritual effect of Enlightenment Room: Increase enlightenment attributes] [The first-level spiritual effect of the alchemy room: the success rate of refining the first-level low-grade elixir +20%] [Lingtian first-level primary spiritual effect: elixir growth speed +20%] [The first-level spiritual effect of the spiritual pool: the growth rate of aquatic creatures +20%, and with advanced conditions, aquatic creatures have a certain chance of advancing into the first-level low-grade monsters] ... Start upgrading from the most basic [Spiritual Pond] in the cave to the last big world. All buildings belonging to him can be upgraded. In order to live a stable and long life, he avoids fights, operates steadily, and is kind to others. During his long training, he has met various characters such as decent leaders, prodigy beauties, evil lords, and thousand-year-old monsters. He has witnessed the ups and downs of the world, and unknowingly achieved the name of "Wu Tianzun", becoming immortal and eternal. ... Steady in cultivating immortality, bold and careful, and decisive in killing.