北京市常务副市长：首都都市圈是目前我国唯一拥有两个直辖市的都市圈，具有独一无二的发展优势

Core Viewpoint - The press conference introduced the "Modern Capital Urban Circle Spatial Collaborative Planning (2023-2035)", highlighting the unique advantages of the capital urban circle, which includes two municipalities, in various aspects such as politics, ecology, economy, and security [1][2]. Group 1: Capital Urban Circle Overview - The capital urban circle is the only urban circle in China with two municipalities, serving as a crucial support for the coordinated development of Beijing-Tianjin-Hebei [2]. - The urban circle is designed to optimize and enhance the functions of the capital, including the construction of the Xiong'an New Area in Hebei and the Beijing sub-center [2]. Group 2: Spatial Structure and Circles - The spatial range of the capital urban circle is not limited to the typical one-hour commuting area but is innovatively structured into multi-layered, nested "concentric circle" spatial divisions based on the capital's uniqueness and the strong driving force of its "four centers" [2][3]. - The commuting circle is defined with a radius of approximately 50 kilometers, covering an area of about 27,000 square kilometers, including all of Beijing and 12 surrounding districts [2]. - The functional circle, which focuses on alleviating and enhancing the core areas of the capital urban circle, has a radius of approximately 100 kilometers, encompassing an area of about 42,000 square kilometers, including parts of Beijing, Tianjin, and Hebei [2][3]. - The industrial collaboration circle is defined with a radius of 150 kilometers, extending to the entire Beijing-Tianjin-Hebei urban agglomeration and connecting with surrounding urban clusters, enhancing the integration into domestic and international dual circulation [3][6].