Analysis of information sources in references of the Wikipedia article "Pinyin" in English language version.
... mainland Chinese Braille for standard Mandarin, and Taiwanese Braille for Taiwanese Mandarin are phonetically based ... tone (generally omitted for Mandarin systems)
In the Cold War era, the use of this system outside China was typically regarded as a political statement, or a deliberate identification with the Chinese communist regime. (p390)
In the Cold War era, the use of this system outside China was typically regarded as a political statement, or a deliberate identification with the Chinese communist regime. (p390)
