After Time Travel, from a Commoner to a Wealthy Country

The laboratory of a top young man who specialized in tinkering with ancient black technology exploded, and his technological level was only equivalent to that of the Dafeng Dynasty during the Qin Dynasty. The things studied in the laboratory ranged from mortise and tenon structures, eight-oxen crossbows, wooden magpies, wooden oxen and stray horses, firearms and chariots, to small cages, animal traps, etc., All of these messy things were put to use. From a poor drunkard who wanted to sell his wife, he rose step by step, from a mountain village to Dafeng, and became the richest man in Dafeng.