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Children travel a long distance with a bucket of water for a living.
But even after a long distance, the water that children can get is not clean enough to be full of germs, so I make a desk-type water purifier where children can earn a living and get cleaner water even if they go to school.
With an easy-to-roll water drum, the children float the water and carry it to school, then open the lid of their desks, put it on a ceramics. and use the water drum as a chair to study. The water flows back through the hose into the bucket over time, and as they go home, the children get clean water.
Gyeonggi, South Korea