## 3 Settings, Data, and Method
### Factors Influencing Location Selection  
The factors that affect the choice of industrial location mainly include two types of micro-market factors and location accessibility factors, including the following dimensions (Table 1).  
1. Industrial agglomeration involves a specific core industry or several related enterprises in an industrial field being highly concentrated in a geographical region to cultivate industrial advantages. This study chooses the total density of each industry within a grid and various types of density measures to characterize the degree of industrial agglomeration. At present, the Zhengzhou East railway station area is rapidly developing, and agglomeration economies still play a leading role in its development. Therefore, the agglomeration benefits index is expected to have a positive impact on industrial location selection.
2. The level of land rent directly affects the formation of the urban spatial structure. The land price of different locations are different, which leads to differences in industrial location choices. This study chooses land rent as the measure of land costs for industrial location selection. Through a shell search for real estate and residential guests, browsing good rental real estate agent platforms, and conducting field investigations and interviews, 100 enterprises' rents were obtained, including shops, office buildings, shopping squares and commercial centers, residential merchants, and other types of firms. The land rent level in all the research area grids is obtained by the kriging interpolation method using Arcgis.
3. Industries choosing to locate near HSR station areas need to consider whether they can obtain external services such as financial and commercial services. It is possible that the closer the commercial center is to the station area, the more attractive that area is to the industry. In this study, the distance between the grid center and Zheng  
\begin{table}
\begin{tabular}{c c c c} \hline \hline
**Category** & **Variable** & **Definition** & **Expected** \\ \hline Industrial location & Location choice of industry in & & \\  & different grid (Y) & Number of POI per grid & \\ \hline Micro-market & Land rent level (X1) & Grid rent price & – \\   factor & Agglomeration effect (X2) & Grid industry density in the last period & + \\ \hline  & Distance to high-speed railway station (X3) & Distance from grid center to Zhengzhou East & – \\  & & railway station (log) & – \\  & Distance to nearest subway station (X4) & Distance from grid center to subway & – \\  & Distance to nearest commuter bus stop (X5) & Distance from grid center to commuter bus & – \\  & & stop (log) & – \\ accessibility & Distance to nearest shopping mall (X6) & Distance from grid center to nearest & – \\  & Distance from bus station (X7) & Distance from grid center to bus station (log) & – \\  & Distance from Zhengzhou International & Distance from grid center to International & – \\  & Convention and Exhibition Center (X8) & Exhibition (log) & – \\  & Distance from high-speed entrance & Distance between grid center and & – \\  & and exit (X9) & expressway intersection (log) & – \\ \hline \hline \end{tabular}
\end{table}
Table 1: Factors and explanation of industrial location selection of Zhengzhou East railway station.  
dong International Convention and Exhibition Center is selected to characterize the association between the station area and the economic center.
4. The accessibility of the regional external and internal traffic infrastructure has an impact on the choice of industrial location. A good traffic infrastructure is highly attractive to industries, and the accessibility of external and internal links is expected to have a negative impact on an industry's decision to locate near the station area. This paper uses the spatial distances to various traffic facilities as indicators to measure differences in infrastructure.