What is the history of Nu culture, the language and writing of Nu people-iron blood?

Nu people are divided into four branches with different cultural origins and different languages. From north to south, the Nu people living in Cha Hua Rong Township, Chayu County, Xizang Autonomous Region, Bingzhongluo Township and Peng Da Township, Dushan Dulong Nu Autonomous County, Yunnan Province are called "Along", with a population of nearly 7,000, which used to be called "Gongshan Nu". The Nu people living in Shangpa Town and Lumadeng Township of Fugong County, Yunnan Province, are called "Anu" with a population of more than 6,000. They used to be called "Fugong Nu people". Today, the Nu nationality living in Pihe Nu nationality township in Fugong county is called Nu nationality, which is the largest population with more than 8,000 people. Because Pihe Township once belonged to Bijiang County, it is also called Bijiang Nu. The Nu nationality living in Tue Township on both sides of Lancang River in Lanping Bai Pumi Autonomous County of Yunnan Province has a population of more than 2,000, which was also called Lanping Nu nationality or Tue Nu nationality in the past. ?

Although the population of Nu nationality is small, the four branches use four different languages respectively. These four languages belong to the Tibeto-Burman family of Sino-Tibetan language family, but their linguistic branches are uncertain. Among them, Nusu, Ruorou and Yi branches are similar, and some of them have the same root words; However, along language and Nu language are far from Yi language branches and have similar characteristics to Jingpo language. In particular, along language and Dulong language are basically the same, and they are two variants of one language.

Among the branches of Nu nationality, bilingualism and multilingualism are common because of their long-term coexistence, intermarriage and communication with the neighboring Lisu, Tibetan, Bai, Han and Dulong nationalities. Many Nu residents can speak Lisu, Chinese, Tibetan and Bai besides their mother tongue. Among Ainu people, mother tongue has degenerated into family language, and the trend of using Lisu language in community communication is more prominent. At the same time, the local Lisu language also absorbed many components of Ainu language.

There are no corresponding characters in the languages of the branches of Nu nationality, and there are certain differences in dialects of different villages. People have used spoken language for generations to inherit the history and culture of their own nation, communicate with others and exchange thoughts and feelings. The original methods of "knotting rope to count" and "carving wood to record and transmit information" have been used in history ~ 1.