I have no knowledge of this novel's main themes. It could potentially deal with love, loss, or social issues like many novels do, but without reading it, it's just speculation.
I'm sorry, I haven't read this novel specifically, so I can't give a detailed introduction.
One possible theme could be isolation. The title gives a sense of a desolate or empty 'shab' (night) which might symbolize a character's feeling of being alone. Another theme could be change, as 'dhal gaya hai' (has set) might imply something coming to an end or a transition.
I'm sorry, I haven't read this novel specifically. But generally, novels often explore themes such as human emotions, relationships, and the state of society. It might be about the melancholy of a particular time or place, or the experiences of the characters within a certain cultural or historical context.
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One of the main themes in Ha Jin's first novel is the struggle against oppression. The protagonist faces unjust treatment at work and tries to fight back. Another theme is the power of art, as his painting is his way to express his discontent. Also, the social hierarchy is a theme, showing how different levels in the factory interact.
One of the main themes could be the passage of time. It might show how things change over the years in the context of the story.
One common theme is the value of small things. Since a ha'penny is a very small amount of money, stories often revolve around how something so seemingly insignificant can have a big impact.
The title 'aag ka darya' gives a hint. It could be about destruction and renewal, like how a river of fire might destroy but also clear the way for new growth. Also, it might explore themes of human resilience in the face of difficult situations. Maybe the characters in the novel have to navigate through a 'river of fire' of problems, be it social, personal or political.
Another theme is the exploration of human nature. Ha Jin often presents characters in difficult situations to show how they respond, whether it's with kindness, cruelty, or something in between. His stories like 'Saboteur' are great examples of this. In 'Saboteur', the main character's actions are driven by a sense of injustice which in turn reveals different aspects of human nature.
As I'm not aware of the 'deewar e shab' full story, it might have themes such as family values, loyalty, and the search for identity. These are themes that are often explored in many stories. For example, family values could play a big role if the story is about a family unit and their interactions and relationships. Loyalty can be a strong theme if the characters in the story have to make choices between different allegiances. And the search for identity could be relevant if the main character is on a journey to discover who they are.