From an industrial perspective, nowadays people process and process materials by adding knowledge content to products in order to increase product value with the least material consumption. We often sell raw products, very wasteful of raw materials without exploiting the intellectual content. Even for intangible cultural heritage, it is also necessary to invest in exploiting and preserving, promoting and multiplying its value. Just with the basket weaving, pancake making, brocade weaving, boi singing, lion dance... of Vietnam, but in 2007, the Smithsonian Institute, USA, with the cooperation of the Ministry of Culture, Sports and Tourism of Vietnam. , held a grand folk festival in Washington, D.C., attracting a large audience. But to prepare, people invest in many things, including survey, training, documentation and finally introduction. For example, with knitting, a rehearsal is held in the form of a “Bamboo Festival”, where artisans demonstrate the knitting of ordinary tools. For the dishes, filming, documentary photography, recording of the processing process are organized to preserve and introduce to the public.