Invincible at the Start

“Ding, the host has opened the invincible domain! As long as the host is inside the invincible domain…!” As a nerd, Chen Changan travels through the fantasy world, facing countless monsters and ghosts from the outside world, Chen Changan decided not to leave his invincible domain before becoming immortal. When he is bored, he occasionally raises a few cute and sweet apprentices, and accidentally cultivated them to become leaders in the spiritual world, which turned the world upside down.