My name is Li Tianhai and I am a man in science and engineering. After graduating from school, I worked as a scientific researcher in a technology company. My main research direction is the application of materials science. During another experiment, my colleague made a mistake and an energy explosion occurred. As a result, my colleague Wei Zhiping and I traveled to the era of Song Renzong in the Song Dynasty. We know we can't go back. We survived in the environment at that time. Since both of us were academic masters, we used our knowledge and understanding of history to help Song Renzong fight against foreign enemies and punish traitors. During this period, we met Kou Zhun, Yang Jiajiang, Bao Zheng, Di Qing and other figures. Song Renzong was very kind and gave us some rewards. But we only wanted a small part. We knew that we did not belong to this era, so we chose to keep a low profile.
