System: Sign in After Rescuing People from the Fire Scene

Immortals and gods lie high in the nine heavens, and demons lurk in the abyss. In this world of vicissitudes of life, peace cannot last more than a hundred years. After rescuing someone, Ye Chen got a sign-in system, and by signing in he could get countless abilities and techniques. While Ye Chen was checking in again and again, enjoying the wealthy life after becoming stronger, the demons and ghosts dormant in the abyss also awakened in the world. Who is in charge of the ups and downs of this vast land? This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.