Rebirth: the Empress Is Trapped in the System and Asks Me for Help

[Rebirth➕System➕Empress➕Multiple Heroines] Eight years ago, Chen Tianyu accidentally traveled to a world just as he was lamenting his bad fate. A mysterious girl appeared in front of him. This mysterious girl claimed to be the creator of the world, gave Chen Tianyu four systems, and asked him to find the key to her cage. Just when Chen Tianyu was full of confidence, he was sent to reincarnation by the girl. When he woke up, he was a baby again.