Great Ming: My Brother-in-Law Is the Emperor

This book is also known as “Borrow Me Five Hundred More Years from Heaven: I Extend the Ming Dynasty's Reign,” “The Ocean's Great Crocodile: Japan, Korea, Europe, and America, All Get Out of the Way,” “Land Hegemon: Southeast Asia Is for the Ming to Decide,” “My Years as a Ming Dynasty Imperial Relative,” “Ming Heavy Industry,” and more.

After transmigrating to the Zhengtong era of the Ming Dynasty, he becomes the brother-in-law of Zhu Qizhen, the Ming's God of War. He turns the tide, starting at the Tumu Crisis, takes control of the Embroidered Uniform Guard, campaigns against the Oirat, pacifies the southwest, and expands the empire's maritime borders. From then on, he builds a legendary Ming Dynasty unlike any other.

No System, just relying on himself. A light read that won't make your brain work too hard.