Tongzhou District, Beijing. Beijing City Sub-center, alias Tongzhou New Town Planning and Construction Zone, is located in Tongzhou District, Beijing. It is the planned construction area of Tongzhou New Town in People's Republic of China (PRC), with a planned area of about 155 square kilometers and a peripheral control area of about 906 square kilometers, which further promotes the coordinated development of the three northern counties in Langfang. The construction of Beijing City Sub-center is put forward to meet the needs of adjusting Beijing's spatial pattern, treating big city diseases, expanding new space, promoting the coordinated development of Beijing, Tianjin and Hebei, and exploring the optimized development model of densely populated areas. 20 12 explicitly proposed Tongzhou as the sub-center of Beijing at the 11th Party Congress. 20 17 according to the requirements of the third session of the sixth national people's congress in Tongzhou district, Beijing city sub-center plans to add 133 schools and kindergartens in three years. On March 29th, 20 18, the Standing Committee of Beijing Municipal People's Congress heard and deliberated the Regulatory Detailed Planning of Beijing City Sub-center (Draft). The regulatory detailed planning of Beijing city sub-center is open to the public. As a wing of Beijing's new wings, Beijing City Sub-center strives to become a world-class demonstration zone of a harmonious and livable capital, a new urbanization demonstration zone, and a regional coordinated development demonstration zone of Beijing, Tianjin and Hebei. On June 2019,65438+1October1day, Beijing Administrative Center officially moved into Beijing City Sub-center. In 2022, after five years of planning and construction, the urban framework of Beijing's sub-center was fully opened. From June 20438 to February 2023, the "three major buildings" of Beijing City Sub-center-Beijing Art Center, Beijing Library and Beijing Grand Canal Museum have been fully completed.