I Raised a Prince in Modern Times, and He Raised a Young Master in Ancient Times.

Two worlds, two identical children, one home. Shen Lie was General Zhaowu of the former dynasty, and he lived in exile for three years incognito with his only prince Situ Yu after the fall of the country. He thought he would never laugh again. Su Wanqing is the female president of a listed company. After her divorce, she raised her son Lu Yiming alone. She thought all she had left in her life was making money. A curtain of light descended at the same time. "Twin Life Contract·Activation. Two children exchange lives, starting in two years, and can return only after reaching the six-dimensional standard - life or death is not guaranteed." Lu Yiming opened his eyes in the ruined temple, and in front of him was the knife raised by Shen Lie. Situ Yu opened his eyes in the 200-square-meter living room. In front of him was the mobile phone held up by Su Wanqing. But it's not the children who need to fix the system, it's the adults. In the process of being forced to raise "other people's children", the two adults had their hard shells chipped away inch by inch - Shen Lie was burned with cracks by Lu Yiming's tears, and Su Wanqing was forced to look at herself squarely by Situ Yu's smile. In two years, the two went from tormenting each other to blocking knives back to back. Lu Yiming taught Shen Lie that "you can laugh while you are alive", and Situ Yu taught Su Wanqing that "it doesn't matter if you stop." The six dimensions—physical, psychological, thinking, skills, relationships, and moral character—climb up little by little. But they don't know that the two children who look exactly the same are actually two halves of the same soul. The real purpose of the system is to make two broken families into a complete home. The adult who lived his life as an island was pushed back to the human world by two children.