First charge of 1 billion at the beginning

The spiritual energy is revived, the world has undergone great changes, the heavens and the alien races have invaded, the gods and demons have danced, and countless powerhouses have emerged one after another.
There are body-refining warriors with humanoid nuclear bombs, and there are cultivators who fly away from the sky and burn the mountains and boil the sea.
It's okay, I have a top-up system.
"Top-up makes you happy, krypton makes you stronger!"
"If it's not strong enough, it must be that you haven't charged enough."
"Young man, do you want to become stronger?"
Mu Fan: "Then... first charge one billion..."