Modern young people traveled through the Anti-Japanese War and the Republic of China and became common people. They unexpectedly acquired the Identification Friend or Foe system. They were humorous and promiscuous, and lived in darkness. They mingled among the Japanese and puppet forces. They met a few ordinary women and spent more than ten years in the world of espionage. After the troubled times came to an end, they quietly went away to spend the rest of their lives.
