2.3. Technical Design Strategy: Region Division

To make the chart not messy and obtain the effective results, we classified provinces based on geographical status and economic conditions. The geographical status is the main administrative division standard in China, hence we divided 19 provinces into five regions: the northeast, northwest, southwest, and southeast coastal regions. Shanghai, Guangdong, and other provinces are economic development regions and important labor input regions for the southeast coastal areas. The central regions represented by Henan, Jiangxi, Anhui, and other provinces, are Chinese labor export provinces. Northwest areas geographical location is relatively remote and the population flow is not as large as the provinces in the central and southern regions. Provinces divided in the same category have similarities in economic and living phenomena. We believe that it is practical to investigate the travel behaviors based on this division. The region division is shown in Figure 4.

Classified provinces based on geographical status and economic conditions. Then select five typical provinces.

The 19 provinces are divided into five regions:

Northeast: Heilongjiang, Liaoning;

Northwest: Gansu, Shanxi;

Southwest: Guizhou, Sichuan, Yunnan, Guangxi;

Southeastern coastal: Shanghai, Jiangsu, Guangdong, Hainan;

Central: Hunan, Henan, Jiangxi, Anhui, Beijing, Shandong, Hebei.

We use Baidu Map API data to obtain latitude and longitude information. Considering the quota restrictions of Baidu Maps API, we have selected a province as the representative of the region and minimized the influence of other interference factors, making them more geographically meaningful, based on the above division of regions.

The southeast coastal area is represented by Shanghai because Shanghai is located at the estuary of the Yangtze River and is a first-tier city in China, which can well represent the economically developed coastal areas. Anhui represents the central region. Anhui Province does not have too extreme indicators. It is not a province with tourism as its primary pillar industry, nor does it along the coast. Heilongjiang represents the northeast region, the geographical location is representative, and there are no other interference features such as coastal areas, tourism, or colossal population size. The northwest region is represented by Gansu, which has more prominent geographical features than Shaanxi Province. The southwest region is represented by Sichuan Province, which minimizes interference factors such as the nature of tourism and the nature of ethnic minority settlements.

In summary, the conceptual framework of our research can be concisely expressed with a flow chart (Figure 5).

The Research Framework. The calculation framework, processing flow and main results are shown.

Note: The content above has been extracted from a research article, so it may not display correctly.

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