the two as they entered Xízhèng Hall, then hurriedly ran off to get Zhang the imperial physician to wait at the door. She was thinking that once His Royal Highness finished his business, she would imm...Chapter 1817: Hell on Earthnything new.But all of these gunpowder, without exception, are the least efficient black powder.Poor stability, low explosive efficiency, small blast radius, the only advantage is that it's relatively...