There are a lot of online Q&As on the web pertaining this but none of them really work because most of the time they are incomplete. Here I list full steps to install Chinese Google Pinyin and Google Japanese Input on Elementary OS.

This step comes from the official site. Open up the terminal and type sudo apt install fcitx fcitx-googlepinyin fcitx-mozc im-config Once you’re done, open up the terminal and type im-config . A prompt will appear. Click on OK, then Yes, then choose fcitx . Reboot.

4. You will see the keyboard icon appear up top. Click on it and pick “Configure”.

5. Press the plus-sign button at the bottom and un-select the option to show current language only.

6. Find the chinese input and add it in.

Done!