Chapter 1736: Yelü Shenxuan's Fury

an Yue Xuan isn't too close or too far from Liu's residence. The servant ran all the way, not daring to take a breath, and when he reached the mansion, he rushed to see Master Liu Sichun.Just as he wa...s that saltpeter is used to make gunpowder.Formerly, gunpowder played a relatively minor role in warfare. Even during the technologically advanced Qin Dynasty, their advancements were limited to the d...