One main theme is the struggle against family or social opposition. Just like in 'The Butterfly Lovers', their families' disapproval was a big obstacle. Another theme could be loyalty. For example, in stories where the lovers are separated, they remain loyal to each other no matter how long the separation is.
The theme of perseverance is common too. Lovers in Chinese love stories usually keep trying to be together in the face of various difficulties. And the theme of unrequited love can also be found in some stories, where one loves the other deeply but the feeling is not immediately reciprocated.
Another theme is sacrifice. Sometimes, one of the characters in the triangle has to sacrifice their love for a greater good. In the story of Xi Shi, Fan Li, and King Goujian, Xi Shi sacrificed her relationship with Fan Li for the political goal of helping King Goujian. She put the interests of the state (or the king's plan) above her personal love.
One main theme is the idea of transformation. Just like in 'The Butterfly Lovers' where the two lovers transform into butterflies. It shows that love can transcend human forms and continue in a different, more ethereal way. Another theme is the power of love against all odds. Despite social barriers like arranged marriages in the case of Liang Shanbo and Zhu Yingtai, their love was so strong that it overcame these difficulties.
One main theme is the interference of external forces. For example, in 'The Butterfly Lovers', it was the feudal system that didn't allow Liang Shanbo and Zhu Yingtai to be together. Social hierarchies, family expectations, and traditional norms often play this role of separating lovers in Chinese sad love stories.
Since I don't know the specific content of this novel, I can't say for sure. But generally in Chinese love novels, common themes include the growth of the protagonists, the challenges in love relationships such as family opposition or misunderstandings, and the pursuit of true love.
Another theme is transformation. In 'Liang Shanbo and Zhu Yingtai', they transform into butterflies at the end. This transformation represents the eternal nature of their love. It's like their love is so strong that it can change their forms and exist in a different way. It also reflects the Chinese idea that love can transcend the physical world.
Family might also be an important theme. The family background and relationships of the characters could play a role in shaping their personalities and influencing their love and life choices in the novel.
Often, there is also the theme of sacrifice. The lovers in these stories are sometimes willing to sacrifice their own well - being or even their lives for the sake of their love. In 'Xiwangmu and Dongwanggong', although their story is not as detailed, their status as celestial beings implies a certain level of sacrifice in maintaining their relationship in the celestial realm.
Love and sacrifice. In a 'Deadly Love' Chinese novel, often one or both of the lovers are willing to sacrifice themselves for the other. This could be in the face of danger, like a deadly disease or a life - threatening enemy.
Love is a major theme. The love between the main characters is intense and full of challenges.
One main theme is the struggle against fate. In stories like 'The Cowherd and the Weaver Girl', they are separated by the powerful will of the Queen Mother of the West, but they still try to be together. Another theme is loyalty. In 'Liang Shanbo and Zhu Yingtai', Zhu Yingtai remains loyal to her love for Liang Shanbo even after his death.