Introduction to China Unification Square: The round altar is divided into three floors, with diameters of 129 meters, 99 meters and 69 meters. The doors on the first and second floors are "four sides" and "eight directions" respectively, and the top floor is the center of the altar. Such a design symbolizes "coming from all directions and coming together to unite" between heaven and earth. The base of the square altar is 6 meters high, and the altar area is the "China Unification Square" with an area of 99,999 square meters. The four corners of the square are inlaid with four "Fu Stones" symbolizing the convergence of all directions in the center.