In the Beginning, I Was Exiled to the North, and I Made Steel and Cannons.

The modern soul traveled through time and became the most unpopular prince Liang Zhao, who was exiled to Liangzhou, the barren fiefdom in the northernmost part of the dynasty. This is a desperate situation of famine, water shortage, and foreign enemies. Everyone regards it as a tomb. However, in the eyes of Liang Zhao, who has mastered knowledge for thousands of years, this barren land is full of treasures. He made gunpowder from the nitrate soil in the saline-alkali land, refined steel from black stone that no one cared about, and fired cement to strengthen the city's defenses. Facing the ferocious sand barbarian cavalry, he first launched a surprise attack with landmines, then used "Zhentian Thunder" grenades to defeat the enemy. Finally, he used the "Dragon Roar Cannon" forged by himself, blasting off the enemy's king's flag with one cannon five miles away, completely defeating the enemy and creating an impossible military miracle. However, a secret letter from the capital revealed that this life-and-death battle was just a killing trap set up by the ambitious emperor's brother. The "yellow bird" of the northern tiger Yue family has also quietly entered the game. Liangzhou's existential crisis has just been lifted, and a power storm surrounding the entire dynasty has just begun.