The scientists studied water resources in Huzhou City using something called the ecological footprint model. They wanted to see if the city had enough water for all the things people use it for without harming the environment. They looked at how much water was used for things like farming, industry, and households, as well as the amount of pollution in the water. They found that, overall, Huzhou had more water than it needed, but the situation changed over time. The biggest concern was the increasing amount of water used for making products, which had a greater impact on the environment. To make sure Huzhou stays sustainable, they need to reduce water use, control pollution, and protect the water ecosystem better.