Fcitx

Fcitx (Free Chinese Input Toy for X) is a Chinese input method. You can install Fcitx by using the following command:

Use Flags
Note: If you want to use Fcitx in Gtk2, Gtk3 or Qt programs, you need to add gtk, gtk3 or qt in USE.

Using Fcitx
In order to use Fcitx in X, you need to add these environment variables(such as ~/.xinitrc, ~/.*shrc):

Note: If you want to use Fcitx in English language, you may add  in environment.

Configuration
You can edit Fcitx's configuration file at.

Also, there is a tool to configure Fcitx called, which is in the Gentoo-zh overlay. (You may need to add the '~arch' keyword).