One possible reason could be extreme debt. If a man owes his enemy a large sum of money and has no other way to pay, in some very strange and unethical stories, he might consider giving his wife as a form of repayment. However, this is completely unacceptable in modern moral and ethical standards.
No, it's usually not a true story. Most of the time, such titles are part of the author's imagination to build an interesting narrative with various plot twists and character developments.
The husband might initially feel a sense of relief if he thinks he has found a way out of a difficult situation, but later he would be consumed by guilt. He has violated the most basic trust and commitment in a marriage. He might also feel a sense of loss, not just of his wife, but also of his own self - respect.
I'm not sure specifically as I haven't read the novel. But typically, there would be the two main characters who are initially enemies, like a hero and a villain - type figure.
Probably the theme of self - discovery. As the characters interact in this unexpected relationship, they might learn more about themselves. For example, they could realize that their previous notions of the 'enemy' were wrong.
One possible theme could be revenge. Since they are enemies, one character might be seeking revenge on the other for something that has happened in the past.
In many Chinese novels with a theme of 'beloved enemy', there could be a complex web of family, power, and love. For example, the two main characters could be from rival families or factions. They start off hating each other due to the long - standing feud between their groups. But as they get to know each other on a personal level, they begin to see past the enmity. There might be misunderstandings along the way that they have to overcome, and their love might be tested by the external pressures of their respective sides.
The author of 'Enemy Enemy Armed Forces' was Liu Zhenyun. The novel tells the story of how Chinese intelligence agents and armed forces carried out intelligence gathering and combat missions behind enemy lines during the Anti-Japanese War.