Daming: After Signing for Eight Years, I Cried with Anger Like Zhu Yuanzhang!

Zhu Shou traveled through the Ming Dynasty and became the grandson of the emperor who had been missing for eight years! Signed for eight years and accumulated countless resources! One day, Zhu Shou's cheap grandfather and dad suddenly came! "Shou'er, what is this flintlock gun of yours?" "Can this potato yield a thousand catties per acre?" "And this thing called gunpowder, is it really capable of defeating a hundred thousand cavalry?"