Skyfall System: Start with a Recharge of 3 Billion

Someday! Mu Qiyun was selected by the system in his sleep. However, if you want to successfully bind the system, you need to submit an activation fee of one billion within twenty-four hours, otherwise life or death will be lost. A system descended from the sky, an activation fee of one billion, and death approaching, where should Mu Qiyun go? Of course, I charge three billion backhand to activate the system. From then on, Mu Qiyun set foot on different planes and faced various worlds. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.