Cultivation? It's Better to Go Down the Mountain and Become a National Teacher

Lin Zhiming traveled to the world of cultivating immortals. Due to his luck, he was assigned to the disciple of a talented and beautiful master, and he also had a cute and cute junior sister to cultivate immortality with him~ Having said that, his natural spiritual roots are "also spiritual roots" that are even more useless than miscellaneous spiritual roots. He has already tried his best to refine his energy at the age of 18, and there is no hope of building a foundation in this life... At least this is the conclusion calculated by the formula. Then what kind of immortality is there? You might as well go down the mountain through the back door and become a mortal's national teacher, and live a wonderful life for three hundred years, and your time travel is not in vain.