Comment by powerapple

Yes, this is very annoying, because how Pinyin works. There were a lot mistakes made when using Pinyin in English content. Pinyin suppose to break at character level, Pinyin = Pin Yin, you can easily write it as Pin-Yin, or Pin Yin, but Pinyin is just wrong.

Hun Yuan is a lot better. I agree, with unicode, we can easily incorporate the tone.