For the first factor, macroeconomic performance and location of the host city, the city's GDP and traffic conditions take the largest share. Most of the investors tend to invest in cities of high GDP, which have a large market, well-developed infrastructure, comprehensive upstream and downstream industrial chains, a good financial system, and a rich talent pool. In addition, they consider the transportation conditions, which include the geographic location of the city, the throughput capability of the city's port and airport (if relevant), the logistics volume of the city and the city's infrastructure for transportation.