Some community sites offer online map vector conversion tools, such as the almighty "XX Converter" website, which you can quickly find through search engines. Submit a graphic file containing a map of China on these sites, and set the conversion settings to output a high-definition map file. This method is especially suitable for work scenarios where designers and editors need high-definition output.

　　The official provider of the map of China is the State Administration of Surveying, Mapping and Geoinformation of the People's Republic of China. They provide a platform for downloading maps of various categories such as topographic maps of China, maps of administrative divisions, and so on. Visit the website (www.nlsw.gov.cn), select the appropriate map type according to your needs, click the download button on the page, and follow the instructions to download. This is the best way to get the most accurate and authoritative version.