When the Emperor Began to Reorganize the Harem

When I became emperor in ancient times, the first thing I did was to call everyone in the harem to check their homework. The beauty is aloof, I will sing a water-melody song to make her fall into my arms! The national treasury is empty, but I have made the whole country rich with my modern business! When the aliens invaded, I directly made gunpowder and muskets. Within the range of the cannon, everything is my Chinese land!