The study looked at how much water Beijing uses and where it comes from, to see how vulnerable the city is to water shortages. They found that Beijing's water use decreased from 2007 to 2012, with a lot of water being imported from other areas. Farmers used the least water but imported the most. The industry used the most water, while services used the least. Areas around Beijing and faraway places supplied the city with water-linked products, which put pressure on those regions. To make the water system stronger, Beijing should get water-related things from places with more water and use water more efficiently in its own activities. This approach could help other places with water problems do the same.