Sorry, I don't understand Chinese or Mandarin (No idea how it is called).

I would like to install this mod on a MC 1.13.2 server. I tried Rift but looks like that they stopped at 1.13 and the Sponge Mixins and reflections don't work (obviously) on the newer 1.13.2.

CAn you quickly explain to me how to install?

I tried to patch the server jar but nothing happens.
I'm missing something?

This is a client-side mod.

1. Chinese
2. It is a client-side mod, you need only install it in client.
3. I made a guide for 1.13.2 installation, please have a look.
   https://github.com/xfl03/MCCustomSkinLoader/wiki/1.13.2-Install-Guide

No further information provided.