The german rules make matters even worse by stating that the pile is setup in descending order, with the highest value at the bottom (which makes no sense).
How are they supposed to be set up?
If you had some tiles numbered 1-10 and you stacked them one at a time it would make sense.
Set down number 10, then set 9 on that, then set 8 on top, then 7... so on & so on. This would be setting them up in descending order with the highest value on the bottom.