Pinyin is a system for writing standard Mandarin Chinese using the Roman alphabet.
Pinyin is a system for writing standard Mandarin Chinese using the Roman alphabet. Pinyin was developed by the People’s Republic of China in 1958, and implemented in 1979. It is used exclusively in mainland China to this day. Over the years pinyin has become widely accepted by the international community, replacing older systems of Romanization such as the Wade-Giles system.
Source:Chinese Pod