The protagonist Li Huo was a captain of the Blue Sky Rescue Team in a certain place before time travel. He died bravely during an earthquake rescue at the age of 26. After waking up, I found that I had traveled back in time to Li Huo, a Qing Dynasty student from Frunze College in Russia during World War I in 1915. The First World War broke out and Russia became involved. Li Huo and other student soldiers from the International Cadet Class were recruited into the army. Because of his outstanding shooting skills in school, he was recommended to be sent to the front line of the Battle of Lublin to become a sniper. With a Mosin-Nagant M1891, he killed 38 Allied soldiers and became a well-known gunner in the Russian Army's frontline troops. Li Huo continues to participate in various tasks. During a secret operation, he was seriously injured and was sent to a rear hospital for treatment, where he met Kozrezova, a field nurse. The two fell in love for a long time. When the October Revolution broke out, the troops were transferred back to the country by the tsar to suppress the revolutionary ranks. Li Huo was imprisoned for a year for refusing to carry out orders from his superiors. He was later released due to the efforts of many parties and returned to Kozrezova's hometown to get married. After the success of the Russian Revolution, reactionary forces tried to extinguish the revolutionary fire and killed Kozrezova's parents. Kozrezova and Li Huo went hunting in the mountains and missed the massacre. Li Huo and his wife returned to the front line and joined the revolutionary ranks. In several battles, Li Huo's performance was amazing. He was personally received by Lenin and served as the company commander of the army, responsible for shooting technology training. Later, Li Huo was framed and imprisoned. He was later released after Lenin intervened. Because he was tired of the political struggle, he chose to retire and return to his hometown with his wife and family, becoming an ordinary farmer and enjoying the happiness of his family.