I recommend Immortal Cultivation: Starting from Building a Family to you. After the main character transmigrated to the other world, he activated the [Immortal's Path] system. As long as he married and had children, developed his family, and completed the invisible mission, he would receive generous rewards. With his own hard work and the system's rewards, he went from being regarded as a spy at the beginning to establishing a family clan, leading the family clan to become bigger and stronger, and finally becoming the family clan's ancestor. No one was his match. I hope you like this fairy's recommendation. Muah ~π