Install fcitx-module-punc-ng by entering the following commands in the terminal:
sudo apt update sudo apt install fcitx-module-punc-ng
Description:
Fcitx punc module for Sogou pinyin
fcitx-module-punc-ng is a module for Sogou pinyin
Homepage: http://pinyin.sogou.com/linux/
Version: 0.1.1~git20161101-1
Section: universe/utils