I Build Cannons in the Cultivation World

The protagonist, Wu Yan, is a 21st-century genius in weapons development. He designed all kinds of precision weapons for Huaguo, helping it join the ranks of the world’s top-tier nations. But when it came to love, he was a hopeless simp: he kept chasing after someone, only to end up with nothing. After an accident transmigrated him to another world, where everyone cultivated immortality, Wu Yan used technology to strengthen himself and build modern weapons. No matter how strong you are, one shot will blow you away!