After Rebirth, My Sister and I Exchanged Beast Control Rings

My sister was clamoring to separate from me, but she accidentally discovered a box buried in the ground by my parents, which was a pair of animal control rings. One has a small black snake carved on it, and the other has a small native dog carved on it. My sister snatched away the little earth dog beast ring first and left the little black snake beast ring to me. My sister said that the little native dog was loyal and would definitely bring her wealth, so she fed the little native dog crazily and made it spit out gold coins, so that she could live the life of a wealthy lady. However, my sister spent money without restraint and fed the little native dog crazily, so that it could produce more gold coins. The little native dog was overwhelmed and eventually exploded and died. The little black snake relied on others' wealth to feed me back, but I always felt that it was not appropriate, so I rarely relied on the little black snake and relied on my own efforts to become a billionaire CEO step by step. Looking at the little black snake with sinister eyes, I shuddered and sealed it into the beast control ring again. At this time, my sister pushed open the door and looked at me with a malicious look in her eyes, then stabbed me in the stomach with a knife. "If you hadn't taken away my little black snake, then I should be the one who becomes the billionaire CEO now!"