Why Do Online Maps Show Offsets? Understanding GCJ-02 Encryption

In response to national standards, all domestic online map service providers (such as Baidu Maps, Gaode Maps, Sogou Maps, and SOSO Maps, etc.) and some foreign online map service providers (such as Google Maps, Bing Maps, and Yahoo Maps, etc.) must undergo GCJ-02 encryption before being opened to the public. This is why people always find offsets when using maps.