My Family Has a Divine Little Aunt

In the worlds of immortals and demons, cultivation only goes up to level 10. The shameless Heavenly Emperor insists he's level 11, but wasn't he beaten up by his own level 10 empress? I'm the unlucky one: I was born at level 10, yet no one believes me. There's no fun in cultivation at all. At least I have a good big brother, so we can play and enjoy ourselves together. What, both my brother's and my marriage contracts have been called off? No big deal! I don't care about my own engagement, but how dare you break off my brother's? I'll slaughter your whole family! When I'm in a bad mood, I kill people! I'm dead serious.