I Have an Agreement with the System

Duan Chen got a system, right! It's just a system, an ordinary system. How ordinary is it? It can use the functions of all systems in thousands of worlds, one system that contains all of them, slaughter chickens and explode with divine equipment? Get rewards for missions? Travel through thousands of worlds to win the protagonist's destiny? Or exchange for true god-level skills? Draw the secret of nine-turn resurrection? "Ding... That... I can do it" This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.