Gan, Gann[2] or Kan is a group of Sinitic languages spoken natively by many people in the Jiangxi province of China, as well as significant populations in surrounding regions such as Hunan, Hubei, Anhui, and Fujian.

[9] During the Qin dynasty (221 BC), a large number of troops were sent to southern China in order to conquer the Baiyue territories in Fujian and Guangdong, as a result, numerous Han Chinese emigrated to Jiangxi in the years following.

In the early years of the Han dynasty (202 BC), Nanchang was established as the capital of the Yuzhang Commandery (豫章郡) (this name stems from the original name of Gan River), along with the 18 counties (縣) of Jiangxi Province.

As the largest commandery of Yangzhou, Yuzhang accounted for two-fifths of the population and Gan gradually took shape during this period.

After centuries of rule by the Southern Dynasties, Gan still retained many original characteristics despite having absorbed some elements of northern speech.

In Gan, there are nine principal grammatical aspects or "tenses" – initial (起始), progressive (進行), experimental (嘗試), durative (持續), processive (經歷), continuative (繼續), repeating (重行), perfect (已然), and complete (完成).

In Gan, there are a number of archaic words and expressions originally found in ancient Chinese, and which are now seldom or no longer used in Mandarin.

Also, to describe something dirty, Gan speakers use "下里巴人", which is a reference to a song from the Chu region dating to China's Spring and Autumn period.

Additionally, there are numerous interjections in Gan (e.g. 哈, 噻, and 啵), which can largely strengthen sentences, and better express different feelings.