In Order to Survive in the World, I Keep the Evil God as a Pet

My name is Chen Wan. There are four ancient fierce god cubs in his body. They eat my blood for twenty-four hours a day, and they can squeeze me into a mummy in three days. If you don't hunt, you will be drained of your essence and blood. If you don't get stronger, you will be defeated. Three hundred years later, in the wasteland, everyone is running for their lives... But Chen Wan is raising pets, raising four ferocious gods that will destroy the world in the future... Is it a blessing or a curse? Fate and cause have already been determined... As for whether these four ferocious gods, raised by Chen Wan himself, will lose control one day... That's for later. Now, Chen Wan only cares about one thing: have you fed them today?