You want to find out where you Chinese stone fits in your progression.

Hone a razor with the Chinese stone and get an even stria pattern on the bevel, you do not have to worry about the bevel coming together, you just want to see the stria pattern.

Mark the halfway point with a sharpie on both sides of the bevel. Now, holding the razor on your 16K stone with the center mark on the edge of the stone, do 10 laps.

Look at the bevels with magnification and compare the Chinese stria to the 16k. The Chinese should be coarser than the 16K. Now do 10 laps on the 8K, holding the center mark on the edge of the 8K, removing the 16K stria. Compare the stria, If the 8K is coarser than the Chinese you know it is somewhere between 8 and 16K.

As said you really do not need it in this synthetic progression. You can easily go from 8 to 16K and the synthetic progression will leave a more uniform stria pattern. A natural stone can have random large grit, leaving deep stria on the bevel.

Chinese stones respond well to burnishing with hard flat carbon steel, as is done with hard Arks and are then capable of producing a finer edge than the grit.

Now at least you will know where you stone fits in your progressing instead of guessing.