Rong Rong is Rong Yan's uncle, but she is actually a poor girl pretending to be a man played by fate. Originally kind-hearted, she lost herself on the road of growth because of the cold-blooded environment and wrong guidance. She was jealous of Ye Chuchu because of her similar looks and different fates. She killed her family, washed away her memory and changed her appearance, but Ye Chuchu was the only one who really cared about Rong Rong, and later her memory was restored.
Later, Rong Rong's true gender was exposed. When he was trapped, he designed to jump into the sea and lost his memory. The plan was designed long ago, but there were mistakes. When Rong Yan found Rong Rong, he lied that he was Rong Rong's brother. In the finale, Rong Rong regained his memory.
Yan Rong once fell in love with Yan Rong by mistake. Love has always been Ye Chuchu, but I mistook her for someone else. When adopting Ye Chuchu, she always knew clearly that this was the person she really loved, but she just mistook Yan Rong for loving Yan Rong and regarded her as a substitute.
Generally speaking, Rong Yan respects Rong Rong and hates her, because she hurts Ye Chuchu and destroys her own happiness.
Ye Chuchu has a love-hate relationship with Rong Rong. When he was a child, he really served Rong Rong, but his sincerity was trampled on.
Rong Rong was really moved by Ye Chuchu, but her paranoia and jealousy made her personally break other people's hearts.
That's about it. Give me a hug, Edward the Black Prince. She should have been treated gently by the world.