This is the first billboard in the world that collects moisture from the air. Of course, its existence is not unrelated to the local special climate. This area lacks rainfall all year round, but the air humidity can reach 98%. Therefore, scientists have used the local environment to add a function to the billboard so that it can absorb and filter water from the air to provide fresh and pure water for local residents. This billboard has a maximum daily water collection of 96 liters. In this way, local residents can avoid the trouble of drilling and fetching water to a certain extent, and obtain another water resource supplement scheme in addition to groundwater.