I Am in Da Qin Xiang Yu, Do You Still Dare to Fight Against the Odds?

Dong Yu traveled through the Qin Dynasty. He found that the Qin government in this era was decayed. He decided to reform the Qin government and make the Qin Dynasty regain its vitality. With his modern knowledge, he invented the steam engine, he built the train, and he also built a powerful army. His reforms caused an uproar in the Qin Dynasty, and he also became the enemy of the Qin Dynasty.