This example displays a basemap of China’s cities and provinces as a static SVG map, rendered using the D3.js library (v5) and its `geoMercator` projection, `geoPath`, and `select` APIs. It loads TopoJSON data from a GitHub gist, converts it to GeoJSON features via the `topojson` package’s `feature` function, and draws each region as a path with an SVG fill. The map’s projection is centered on China with a specific scale, and the country outlines are styled with a green fill and semi-transparent black stroke.