Red Boat Spirit is the spiritual source power for the construction of the “Important Window”, and it shows the brilliance of times in the practice. From the Red Boat Spirit to the construction of the “Important Window”, it has reflected Xi Jinping's continuous consideration and earnest instructions for the development of Zhejiang. The practical value of the Red Boat Spirit in encouraging the construction of the “Important Window” is concentrated in the following aspects: the pioneering spirit highlights the practical character of the construction of the “Important Window”; the striving spirit endows the practical power of the construction of the “Important Window”; and the dedication spirit stipulates the practical purpose of the construction of the “Important Window”. According to the standards to build the “Important Window”, Zhejiang adheres to the Red Boat Spirit's guide, following the practice logic of focusing on a people-centered approach, putting the political construction first, seizing the new heights of the digital economy, building up new development pattern, and contributing Zhejiang experience for upholding and developing socialism with Chinese characteristics in the new era.