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@puniko @feli@mk.paritybit.ca Now you know how GPS works in China. Due to the security-through-obscurity military stupidity, map coordinates are classified as national-security information. It's illegal to provide maps with accurate coordinates without a license. All the longitudes and latitudes in public maps have pseudorandom random offsets added per regulation, we call it "Mars Coordinates". When you use a GPS, all locations are off by a street or so. Domestic devices add the same pseudorandom random offsets to the raw GPS data so two wrongs make a right.