中文 
gein
deepin
3 hours ago deepin I had the same issue and I used this bash on Terminal:
nano \~/.config/fcitx5/conf/classicui.conf
Then added a line to increase the font size of the predictor (if there's nothing in the file, don't worry, just write/paste the line) and that increased the size enough for me:
Font="Noto Sans CJK SC 18"
Click Control + O, save it (Enter) and close the window. You can go higher with the number if you need to.
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I just installed Deepin 25. I configured English as the main language. I added Chinese - Pinyin as an input method.
The Pinyin keyboard toolbar is very small. It's difficult to read the Chinese characters.
I saw a "Page Size" setting in the Pinyin keyboard options, but changing that value did not have an obvious effect.
How can I increase the size of the toolbar?