System + City + Immortality + Invincibility
When Xiao Yun was young, both his parents died and he raised his younger sister alone. He awakened to the sign-in system in the midst of hardships, met Tang Yunran by chance, started cultivating immortality, made significant contributions to the country, reached the top, later hid his identity, gave birth to two daughters with Tang Yunran, lived an ordinary life, and spent his whole life sweetly.
This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.
