The collision of the cloth with the ground

Hi

I know how to use nvidia cloth plugin, brush max distance, and create kinematic rig.

How to make a cloak should not penetrate the ground?

![140089-})gpu]r}2`(m1g(dxi_}6o7.png|233x93](upload://4YhVnWPUBcPiDUX7OMgxBozGhRt.png)

import to UE4:

![140090-hxj8h9p8ni992t{}zajktn.png|269x671

I want the following effect at 16:35:

I have already understood how I should do it.