My Fairy Mansion Has a System

I don't have a system, but my fairy mansion has a system! A migrant worker struggling in the world of immortality, with no adventures or golden fingers, he has struggled for ten years for a 'house' of his own. The moment he stepped into the Immortal Mansion... "Ding, the system is on." "Host: Immortal Mansion" "..." "Su Zhen Dan is successfully refined, and the proficiency of the Dan recipe is +1." "The Golden Light Talisman was successfully refined, proficiency +1, Tao Yun 67%, spiritual power blessing..." "High-quality red evil iron quenching spirit. It can be strengthened by consuming spiritual energy value." "The evolution of the spirit-controlling array is complete, and the derived characteristic is: spirit storage." … In this era of great change and great contention. I rose from a humble beginning, traveled across thousands of mountains and rivers, saw countless enemy countries, and came here to see the path to eternal life. (System flow, mortal flow, farming flow, invincible flow. The author has mature ideas and prefers some formation elements.)