Why do the villagers hire Joynul?

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Nazma studied only up to class five. So, she is basically not an educated person.

Joynul's family lives in a small village.

Nazma does the household chores. She works relentlessly from morning till night.

Joynul and Nazma live from hand to mouth. Joynul is a carpenter, and Nazma is a housewife. They have a very limited income. Sometimes, Joynul does not get work, and the whole family suffers for that. So, I think their life is hard.