Due to some Chinese regulation from the Cold War, Chinese maps have an offset (i assume it used to be secret otherwise it makes little sense).
You can read more about it here: [What The Map? Why Maps in China Are Offset][1]
I don't know anything about Google Fusion tables, but since Google (and others) know about this offset and offset, my guess is that they compensate for it when you use fusion tables.
[1]: http://www.polastre.com/2013/02/what-the-map/ "What The Map? Why Maps in China Are Offset"