Douluo: I Am Engaged in Infrastructure Construction in Douluo

In Calendar 01 of the Wuhun Empire, Wuhun City became the most prosperous and powerful political, cultural, economic, and military center in the Douluo world. I have made an indelible contribution to this end. (Infrastructure article) (Also known as, I develop technology in Douluo) Zhang Ye came to Douluo Continent with the infrastructure system. From a small city lord, he started from planting modern crops, burning bricks, making salt, cement, raising improved soul beasts in captivity, allowing civilians to receive education, making paper, and then developing steel. When a certain three came back from time travel and were still complacent about developing hidden weapons, Zhang Ye had already developed thermal weapons. When others were still saying that within seven steps, the sword was invincible, Zhang Ye told them with facts, within seven steps, the sword was fast and accurate.