By the end of 2023. According to the official website, the Beijing Municipal People's Government and the Beijing City Sub-center, known as the "Forest Bookstore", are under construction in this area. It is planned to be completed by the end of 2023 and opened by the end of 2023. In the future, the sub-center library will become a cultural complex integrating knowledge dissemination, urban think tank, learning and enjoyment through various means such as display, experience and interaction, and bring it to the public.