I, Sang Biao, Transmigrated to the Ming Dynasty to Avert a Catastrophe in the Future

I, Sang Biao, transmigrate to the Ming dynasty and invent modern conveniences to save Empress Ma, Zhu Biao, and Zhu Xiongying. With the mindset of the Ming dynasty’s greatest merchant, I take on the Lu clan alone. I’ll make up for some of history’s regrets. Is it really too much to give Zhu Di two Ming-made 98Ks? And would it be so unreasonable to use modern weapons to attack Japan? But back to the point: I use modern knowledge to help Zhu Yuanzhang govern the country and advance science, technology, and industry.