job expressing your gratitude to Song Yingxing. From now on, you will be in charge of developing even more powerful gunpowder."The use of gunpowder in the Qin Empire is already widespread now. From l...
job expressing your gratitude to Song Yingxing. From now on, you will be in charge of developing even more powerful gunpowder."The use of gunpowder in the Qin Empire is already widespread now. From l...