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Water scarcity is a common problem perplexing many parts of the world. We've been trying to find out a efficient way of water resources utilization. In nature, there are kinds of water that cannot be used for direct drinking, such as rainwater,sewage, seawater and so on. This water collecting device can be used in water shortage regions as Africa, purify the contaminated water for drinking. Whether it is the case of daily life or the occurrence of various disasters, this catchment device can solve the water drinking problem successfully.