Alone in a Primal World, I Rise to the Top

[Rags-to-riches + feel-good power fantasy + reaching the pinnacle of life] Poor Chen Pengcheng was asleep after a night shift when a glowing sphere of intense heat suddenly flew past his window. The window had gained the ability to connect to an unknown primitive world. Curious, Chen Pengcheng ventured into that world. To escape poverty, he began using the superpowered window to transport goods from the primitive world and sell them in the modern one. Once he had saved up enough money, he started clearing land and farming. Using modern-world technology, he gradually developed the primitive world, and his fortune continued to grow until he finally reached the pinnacle of life.