Zhejiang, China city boundaries, free.
Eleven prefecture-level cities in all seven formats: GeoJSON, shapefile (.shp), SVG, DXF, GML, KML and CSV. Open it in QGIS, load it in PostGIS, drop it into AutoCAD. Then decide.

What is in it
| Formats | GeoJSON · SHP · SVG · DXF · GML · KML · CSV, one zip |
|---|---|
| Coordinate system | WGS 84 · EPSG:4326 · decimal degrees |
| Geometry | MultiPolygon — one feature per division |
| Codes | 6-digit GB/T 2260, e.g. 440300 |
| Names | name_en and name_zh on every feature |
| Hierarchy | province_code → city_code → code |
| Extras | parts, center_lon, center_lat, bbox |
| License | Commercial use, one organization, no attribution required |
| Delivery | Instant download; links re-issued whenever you open them |
| Data current to |