A former freshman at East China University of Science and Technology, traveled back to the Republic of China in 1931 in a physics class. It was the time when Japan occupied the three northeastern provinces of our country. During the time travel, he retained the memory of his previous life, and then used his grasp of historical time , decided to use knowledge to change the fate of the people, return to history and witness the heroic Chinese sons and daughters in the War of Resistance, and took the lead in establishing the National Salvation Alumni Association during the War of Resistance.