““Slam your hand on the table! C’mon, sound angry! Slam, slam, slam!” The class followed their teacher, hammering their hands on their desks. They were trying their best to learn Chinese."
Recently, I found an interesting blog might be useful to answer this question. Hanyu Pinyin [漢語拼音] (developed in Mainland China, now the international standard for romanization) and Zhuyin Fuhao/Bopomofo [注音符號] (developed originally in mainland China, now used primarily only in Taiwan).
Chinese is a group of languages. The most we have heard of are Mandarin and Cantonese. One of the most important reasons is Mandarin is one of the 6 foreign languages in United Nation, it is official language to be used in business, education, and government.