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Hum tum, ek kamre mein bandh ho, aur chaavi kho jaaye...It was a popular old Hindi song, about a couple who’re shut away in a room when the keys go missing.

Agarwal later made Bandh Darwaza in 1990 with the Ramsays, which made money again.

The head of Indian drugmaker Biocon jokingly referred to Bengaluru as "Bandhaluru", using the Hindi word "Bandh" for closed.

A nationwide “bandh” – Sanskrit for closed – on the same day last year reportedly involved 140 million workers, and unions say the figure could reach 180 million this year.

Their secret is a 100-year-old indigenous irrigation system called dong bandh – a network of canals that uses the downhill flow of the area's rivers and streams to bring water to villagers and their fields.