## 4 Discussion
### Measures for the Development of Commercial Space  
(1) Multi-center development  
According to the optimization results, commercial space in Weinan City's center should be developed in a multi-center cluster, forming a spatial layout of \"one primary and two secondary\" centers, as illustrated in Figure 8.  
The \"primary\" refers to the central group commercial area, which should continue along its current development trajectory, enhance the quality of its regional commercial facilities, and play a core driving role.  
Figure 8: Multi-center space layout diagram.  
Figure 7: Forecasted commercial static density diagram.  
The \"secondary\" centers consisted of the high-tech industrial development group commercial center and the economic and technological development group commercial center. The high-tech industrial development group commercial center was located in the high-tech industrial development zone, in proximity to Xi'an City, and was a significant layout area for the integration and development of Xi'an and Weinan Cities. The high-tech industrial development group should revolve around Wanda Plaza, continuously improving commercial facilities to spur the development of regional commercial space.  
The economic and technological development group, which was located on the north bank of the Weihe River, should focus on enterprise-centered commercial facilities, enhance the degree of commercial facility aggregation, and establish a new commercial sub-center to drive the development of commercial space within the economic and technological development zone.  
Multi-axis development  
According to the optimization results, commercial space in Weinan City's center should adopt a \"primary and secondary\" spatial layout along the development axes. Figure 9 illustrates these two development axes: one extending northward from the central group, and the other westward.  
Commercial space development in central Weinan should primarily follow the westward axis, given its superior infrastructure environment and rapid expansion rate. Prioritizing the westward development axis can also accelerate the integration process between Xi'an and Weinan City, which aligns with the planning of the Xi'an metropolitan area.  
While the region north of the central group possessed abundant land resources, especially across the Weihe River, its slower development rate made it a more suitable secondary development axis. Although the development of commercial space across the river is an inevitable trend, this area should serve as a complement to the main westward development axis.  
Office space guides business development  
The results from related studies show that the strongest correlation between the office function POI data and commercial function POI data occurred in Weinan City's central urban area. This suggests that areas with a concentration of office spaces should also be the  
Figure 9: Axis development diagram.  
sites for commercial facilities. Thus, when planning commercial space development, the central area of Weinan City should prioritize aligning with office spaces. This approach is both effective and sensible.  
As demonstrated in Figure 10, there was a considerable overlap between the concentration of office spaces and commercial spaces in the central cluster. This overlap will further enhance the densification of commercial spaces. Meanwhile, in the high-tech industrial development and the economic and technological development clusters, the office and commercial spaces were somewhat distanced from each other. In these areas, the expansion of commercial spaces should progressively move toward office spaces.