Introduction to Time and Space Square: In order to deeply commemorate Mr. Zhang Xiangwen’s outstanding contributions to Chinese and world geography, further inherit and carry forward his scholarly spirit, and vigorously popularize geographical knowledge, in accordance with the "Five Realms" (star realm, land realm , air world, water world, biological world) landscape planning and design concepts, Siyang County planned and constructed the Nanyuan Scenic Area at the former site of Zhang Xiangwen's former residence.