Travel Through Mortal Life and Become Nie Ying's Biological Brother

Nie Yuan traveled to the world of mortals cultivating immortals and became the brother of Nie Ying, the most beautiful woman in Yellow Maple Valley. At the beginning, you get a sign-in system, top-grade foundation-building pills, top-grade magic weapons, top-grade exercises, and all kinds of rare treasures. How will he deal with family enemies, demon wars, and the invasion of the Mulan people? The plain-looking Han Tianzun, the ruthless Senior Brother Lu, the love-minded Senior Sister Chen, the genius girl Yan Ruyan, and the miserable Wang Chan... What kind of story will happen because of his arrival? Please everyone re-enter the mortal world and embark on the journey of cultivating immortality again!