Gro-Tsen on X: "Classic LaTeX: the answer to a question which aught to be trivial (getting bold math!) reveals (https://t.co/1ZLpXve2VU) the existence of about 42 packages to do it, with obscure interactions
Your Beamer Guide to Text Formatting - LaTeX Beamer
Chinese characters, package CJKutf8 disables text formatting in whole document : r/LaTeX