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Bopomofo/Introduction-What is Bopomofo?
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Bopomofo, or Zhuyin(Chinese:注音符號 or 注音), is a phonetic system of Chinese used in Taiwan. It is also previously used in Mainland China before the government adopted Hanyu Pinyin.
Why Bopomofo?
Pinyin is susceptible to interference from English pronunciation habits (such as with "qian(Zhuyin:ㄑㄧㄢ)" and "xian(Zhuyin:ㄒㄧㄢ)"), whereas each symbol in Zhuyin corresponds to only one specific pronunciation.
When it comes to the medials ㄧ (yi/i), ㄨ (wu/u), and ㄩ (yu/ü), Zhuyin is significantly simpler and more consistent than Pinyin.
In Pinyin, when you add a starting consonant to certain u or i sounds, the middle vowel is dropped from the spelling, even though you still pronounce it. This trips up almost every beginner. Zhuyin keeps every single sound visible.
The trickiest rule in Pinyin involves the German-style dots over the ü (ㄩ). Pinyin drops the dots when combined with j, q, x, and y, but keeps them when combined with n and l. However, Zhuyin completely eliminates this confusion because ㄩ is always ㄩ.
Learning and writing Zhuyin can be a advantage of learning Chinese Hanzi(汉字), since some of the Hanzi characters are just Zhuyin combined.
Learn more
Wikipedia article about Bopomofo