Mandarin, a group of related varieties of Chinese, is spoken in 14 countries by 898 million people – mostly in northern and southwestern China.
Chinese Pod notes:
Mandarin Chinese is a tonal language. In order to differentiate meaning, the same syllable can be pronounced with different tones. Mandarin’s tones give it a very distinctive quality, but the tones can also be a source of miscommunication if not given due attention. Mandarin is said to have four main tones and one neutral tone (or, as some say, five tones). Each tone has a distinctive pitch contour.
I’ve found it impossible to find live streams of environmental sound, so have had to use field recordings taken outside of the midday timeframe the other sources are recorded during.