The Quarter-BAM project

I finished the 44 BCE quarter Bam:
QuarterBam.BCE 44.png
BTW, is anyone doing the topographic/bathymetric basemap? it would certainly incease a lot the chances of people using the map

So comparing the QBam subdivisions of China (red, resized to be the correct size), they are incredibly off with the Quarter Bam subdivisions (blue). How did this even happen?