Tutorial: How to configure Ibus or fcitx input method for HelloSystem?

Hello, current i am linux user. i am good at using ubuntu .
I would like to try HelloSystem, install it on my laptop.
I am trying to figure out how to setup a chinese input method.
I often told we can using Ibus or Fcitx.
How to set up it on HelloSystem.
Need some document to description us how to do it ,thanks.

Start by researching how to configure Ibus or fcitx for Chinese input methods on HelloSystem. Document the setup steps for HelloSystem users, with instructions clear enough to follow from installation through successful Chinese text input.

索引モデルが issue の本文から書いたものです。