Every official China City navigators are shifted (governement choice).
Traditional Chinese Shifting is up to 600 meters in azimuth 260degrees. Almost inusable in gps

You can see an explanation here in post n5
[Only registered and activated users can see links. ]
Usually after some days from publishing date ,our valuable member syzygy offers us the Venus version, that's is the NON shifted version.
Chineses call this shifted version Mars and the Non shifted version Venus,lol sorry I forgot why