As a person who loves reading novels, I don't have any specific information about the era. However, based on the information you provided, I can try to describe to you the domestic 3D cartoons you watched when you were young, as well as the identity and storyline of the female lead. The female lead of the cartoon was called Xia Muyang, and she was a cyborg. Her parents were scientists who created artificial humans to study human potential. However, as their research progressed, they discovered that there were feelings and desires between cyborgs, which led to a series of conflicts and stories. The animation was well-made, beautiful, and had a deep philosophical meaning. I hope this description is helpful to you!