​The papermaking is one of China's four great inventions, and it has been the treasure and proud of people. However, the way of ancients’ papermaking has been extravagantly strange for us who live at the age of Internet, and what we roughly understand comes from brief introduction in literatures. While folk craftsmen scattered in ethnic minorities insist on unique workmanship spirit and make their living by virtue of their own skills, by which we are enabled to witness real traces of the papermaking technique in remote times. The craftsmen in Shangyun Town have been passing on their skills and hold in their own worships with the papers developed themselves.

Mangjing and Mangna, unique villages where Dai people live and under the jurisdiction of Mangjiao Village Committee, Shangyun Town, Lahu Ethnic Autonomous County, Lancang, located at six kilometers in the west of Shangyun Town, Lahu Ethnic Autonomous County, Lancang, is a Dai inhabit mountains. Dai People living there Claims themselves to be “Beng People”, the difference between Ben People and other Dai national minorities lies in women's headscarf headscarves, which are made of native clothes woven by women themselves, taking on a unique pattern of yellow-red-black alternate colors.

It was said that “Beng People” emigrated from Baoshan, one tribe of them settled in Mengding Town, Gengma County, and the other visited Shangyun Town, Lancang County. There is no historical data available for review for when “Beng People” started to conduct the papermaking, which has a long history by inferring from related information. The ancestors of Dai people embraced Buddhism, and they would chant the buddhist scriptures while holding sacrifices. And the paper was required to transcribe scriptures, the paper was deemed to be luxurious item under the condition of backward social production at that time, and common people could not afford it. Gradually, diligent and smart ancestors of Beng people found that the barks of broussonetia papyrifera could be used to make the paper, which developed were characterized with tenaciousness, whiteness, tenderness, smoothness, non-obsoleteness under long storage, non-breakage under great force, anticorrosion and mothproof feature and others advantages, and the characters written down on the paper would never fade. So the scriptures transcribed could be saved for forever and handed down from generation to generation. Currently, not only Dai people transcribe scriptures with the paper but also surrounding peoples and folks from temples apply the paper and other sacrificial offerings, and the paper is widely used in folk activities and daily life.

 Manual papermaking technique of Beng people from Dai nationality is a technique developed based on traditional papermaking, and it is a “living fossil” of folk papermaking in China. This papermaking process completely remains 5 processes including the “soaking, steaming, paper pouring, paper drying" as well as 11 working procedures including materials purchasing, soaking, mixing, steaming, washing, pulp tamping, paper pouring, paper drying and paper unveiling. Beng people call paper developed “Gei” or “Jie” (spelled in Chinese Pinyin), main raw materials of such paper are made of broussonetia papyrifera (named to be “Maisa” by Beng people) and lobules tree (named to be “Maihai” by Beng people). The broussonetia papyrifera tree is a perennial broadleaf shrub generally grown in Lancang, which is easy to plant and survive, and this species of tree has been planted by many farmers around the house. This plant grows faster, and normally it may be cut approximately on yearly basis. Its branches may be burned as the firewood, its leaves may be used to feed pigs, and its barks may be used to make paper.

It is required to collect raw materials for papermaking, people came and visited around their homes and near stockade villages to cut off trunk of broussonetia papyrifera or cut down large-size branches during July and August annually, carefully stripped the barks, and then washed off the mucus from stripped trunks of broussonetia papyrifera by virtue of the water on the river, scrapped outside layer of black bark entirely with the knife, only retaining white tender bark. The barks will be washed on the river for the first time when they are peeled off, at that time the black barks must be completely cleaned, or otherwise they will impair the quality of the paper. When the barks are cleaned, they will be carried home for the second process, namely the separation of the fiber, the cleaned barks of broussonetia papyrifera will be subjected to the heating, plant ash tapping and plant ash developing to have plant fiber raw materials scattered into fibrous shape, firstly sift the heated pulp with the sieve to remove the charcoal and other sundr