A little tip to get the correct provincesI have an issue that needs to be brought up concerning China. Unfortunately, the 6 eastern coastal provinces seem to be off, and they will need to be looked at. In the image, I have taken an upscaled image of the 8k-BAM and overlayed it on top of the VT. You can see that everything besides these 6 look great, but that the 6 are incorrect.
Use gadm or even better, osm data and do some calculations, rasterize the data in qgis