>>107631744
You can actually set a larger font size for the chinese characters assuming it's a different font. What's great about it is that the bar will increase its size when cjk chars are present and then go back to the smaller size when they're gone.
I did this on my setup with the following:
(defun reset-font ()
"Needed when a new client frame is created by emacs server, or the font is tiny"
(set-frame-font (font-spec :name "Input Mono" :size 12 :weight 'medium) nil t)
(set-fontset-font t 'unicode (font-spec :name "Noto Sans CJK JP" :size 16 :weight 'medium)))
(reset-font)
(add-hook 'server-after-make-frame-hook #'reset-font)