Not just Chinese teachers but language teachers in general: - Patience - To know which mistakes are common and how to fix them - Knowledge of culture so you can make recommendations (movies, books, shows, music, etc.)

Patience, of course, is very important . In my opinion, the best teacher also needs to know students. For example, what's their weakness and strength, what study methods can make them get more interest and more knowledge. what they feel recetently. In a word, to be a good teacher means a lot.