In China in the 21st century, Liu Zhenhua is an outstanding soldier of the People's Liberation Army. In an accident, he traveled through time and space to the Republic of China and became an agent of the Peking Branch of the Military Command. In 1935, the situation in North China was changing. Liu Zhenhua relied on his extraordinary martial arts and wisdom beyond the times to shoulder the heavy responsibility of fighting against the Japanese invaders. Putting national interests first and national liberation as his own responsibility, he launched a series of clever and fatal blows against the Japanese invaders. In this struggle full of dangers and challenges, Liu Zhenhua gradually found his own organization, and his identity became complicated - he was both a military agent and an underground party member, and he was also "one of his own" in the eyes of the Japanese and puppets. Under the cover of his triple identity, he devoted everything he had to the 450 million compatriots of the motherland and to the cause of liberation of the Chinese nation. He started his Anti-Japanese War career by meditating silently, "If you only die for the country on the battlefield, there is no need to return in horse leather." In the 1,000-chapter epic story, how Liu Zhenhua survives in troubled times, how to outwit espionage wars, and how to grow in war will be revealed one by one. This is a legendary story about resistance, agents, time travel, espionage and troubled times. It will take you into that turbulent era and feel the passion and loyalty of a warrior.