Anhui is mainly bounded by the Huaihe River. To the south of the Huaihe River, that is, southern Anhui, rice is the main food. To the north of the Huaihe River, that is, northern Anhui, pasta is the main food. The regional cultural characteristics of the transition zone between the north and south of the Huaihe River: When studying the characteristics of the Huaihe culture, we have used the term "nan rice".

To the north, tea in the south and wine in the north, boats in the south and carriages in the north, barbarians in the south and chariots in the north" are summarized.

In fact, the situation is very complicated.

Cultural phenomena produced by the natural geographical environment are just like changes in nature. Only when they accumulate to a certain extent will they transform from quantitative changes to qualitative changes, which is the so-called "critical phenomenon".

It has a jagged landscape between two different adjacent areas.

The sonorous and powerful rhythm of Fengtai flower drum lanterns forms a euphemistic and lyrical double drum between Dingyuan and Fengyang; the teahouses in Linhuan and Yingshang in Huaibei, and drinking liquor between Jianghuai and Huaihe are all like the contraction of human blood pressure

critical ends of blood pressure and diastolic blood pressure.

Huaiyuan is located across the Huaibei River, but it belongs to the Jianghuai dialect area. In terms of social customs, it is also very different from the neighboring Mengcheng.

It is these cultural phenomena of jump change that form the mutation zone of critical phenomena.

The areas on both sides of the Huaihe River are in such a sudden change zone.

Extended information Introduction to Wannan: Wannan, the abbreviation of southern Anhui Province, is located in the Yangtze River Delta urban agglomeration headed by Shanghai, bordering Jiangsu to the east, Zhejiang and Jiangxi to the south, and Hubei to the west.

The terrain of southern Anhui consists of the mountainous area of ??southern Anhui and the plain along the river in southern Anhui, with two mountain systems, namely Jiuhua Mountain and Huangshan Mountain, running across it.

The place name of Wannan originated from Jiangnan Road in the Tang Dynasty, took shape in Jiangnan East Road in the Song Dynasty, took shape in Jiankang Road in Jiangdong in the Yuan Dynasty and Wannan Road in the Qing Dynasty, and was finalized in the Wannan Administrative Office in the Republic of China.

The scope includes Huizhou Prefecture, Ningguo Prefecture, Chizhou Prefecture, Taiping Prefecture, and Guangzhou Prefecture.

After the founding of the People's Republic of China, it refers to the area south of the Yangtze River in Anhui Province, including Huangshan, Wuhu, Ma'anshan, Tongling, Xuancheng, Chizhou and 6 cities.

Introduction to Wanbei: Wanbei, the abbreviation of northern Anhui Province, is located in the Yangtze River Delta urban agglomeration headed by Shanghai, bordering Jiangsu to the east, Wannan to the south, Henan to the west, and Shandong to the north.

The terrain is mainly plains, with the vast Huaibei Plain, and it is located in a strategic location from south to north, east to west and out.

The main channel is the Eurasian Continental Bridge, which is the only area in Anhui Province that the Belt and Road Initiative passes through.

North Anhui originated from Lufeng Road in the ninth year of Emperor Kangxi of the Qing Dynasty. It was renamed North Anhui Road in the 34th year of Emperor Kangxi's reign. It covers Luzhou Prefecture, Fengyang Prefecture, Yingzhou Prefecture, Anqing Prefecture, Bozhou, Sizhou and Lu'an north of the Yangtze River in Anhui Province.

Zhouzhou, Chuzhou, and Hezhou.

It now refers to the area north of the Huaihe River in Anhui, including six provincial cities including Suzhou, Huaibei, Bengbu, Fuyang, Huainan and Bozhou.