After some passes on the Norton 8k, I use the Chinese natural stone for finishing.
The first 20 passes are with slur made from the blue part of the Belgian.
Then 25 passes with slur made from the yellow part of the Belgian.
Then 25 passes with slur made with the small piece of the Chinese stone which usually comes together with the Chinese when you buy it.
And finally, the last 30 passes on the Chinese stone without any slur, just water.

It works fine for me.