<a href="https:&#x2F;&#x2F;wuyongzheng.wordpress.com&#x2F;2010&#x2F;01&#x2F;22&#x2F;china-map-deviation-as-a-regression-problem&#x2F;" rel="nofollow">https:&#x2F;&#x2F;wuyongzheng.wordpress.com&#x2F;2010&#x2F;01&#x2F;22&#x2F;china-map-devia...</a><p>There are now many OSS-tools that convert between the global  coordinate system standard (WGS-84) and the Chinese deliberately incompatible coordinate systems (GCJ-02 and BD-09).