Nc indicates that the pinyin abbreviations are N and C, and Chinese characters such as nicknames, Nanchang and Memory can be obtained according to the pinyin.
Hanyu Pinyin is a Latin Pinyin scheme for Chinese characters promulgated by People's Republic of China (PRC), which refers to the phonetic syllables of standard pronunciation of Mandarin in modern Chinese, and consists of letters and spellings specified in the Hanyu Pinyin scheme.