Teaching video: 对不起,我的中文不好 Funny discussion video: Pronouncing things incorrectly https://www.youtube.com/watch?v=0IxtXtdygrk Reading material after 对不起 song 怎么发音(难发的音)https://sensiblechinese.com/chinese-pronunciation-zhj-chq-shx-and-why-we-learn-these-incorrectly/