What was to be built in the farmhouse garden fin animal farm chapter 9?

In Chapter 9 of "Animal Farm," the animals plan to build a windmill in the farmhouse garden. This project is intended to improve their productivity and provide a better quality of life, as they believe it will generate electricity and make their work easier. However, the animals face numerous challenges, including harsh conditions and dwindling resources, which complicate their efforts to complete the windmill. Despite these obstacles, they remain determined to see the project through.