Because they practice a ritual of“climbing a mountain of swords and plunging into a sea of flames”,the Lisu are referred to as an eth-nic group who“climb up a mountain of swords and plunge into a sea of flames” by the outside world. However,if seen from their dietary characteristics, it would also be true to call them“an ethnic group who eats lacquer seed oil”. Lacquer seed oil is also referred to as “lacquer tree fat”. It is a kind of pure and natural plant oil which is always found in the Lisu’s diet. In the Lisu language,it is called as“zhiche”. For a long time, lacquer seed oil has been the primary cooking oil for the Lisu,who live next to the Langcang and Jinsha Rivers,as well as for their neighboring ethnic groups, such as the Nu,and the Dulong. Even though nowadays their communication with the outside world has in-creased,and the kinds of cooking oil have also di-versified, the Lisu who live in the “Three Parallel Rivers Area” still favor using lacquer seed oil,and it cannot be absent from their daily diet or during festival celebrations. Even those Lisu people who have migrated to Mytchina in northern Burma, where their daily production and living conditions have undergone great changes when compared with those in their ancestral land,they still have a spe-cial preference for lacquer seed oil. They regard lacquer seed oil given to them by their relatives from Nujiang as one of the best gifts. It could be said that the dietary culture developed from lacquer seed oil has become an important traditional cultur-al trait of the Lisu, and also an important cultural symbol for the Lisu. 1 . Lacquer Seed Oil and the Lisu The Lisu is a transnational ethnic group. The Lisu in China are scattered in “the three rivers”area( Nu River, Jinsha River and Langchang Riv-er) . The majority of Lisu live in Nujiang Lisu Au-tonomous Prefecture. The second largest concentra-tion of Lisu is in Weixi county of Diqing prefec-ture;As for foreign countries,Burma is their major area of distribution,and they are mostly concentrat-ed in the north of Burma. The primary habitation areas of the Lisu,who are called the “children of the three rivers”,are high mountains and deep for-ests,and places with a wet climate, and plentiful sunshine. All of these conditions are good for grow-ing lacquer trees. Because they have lived in lacquer tree grow-ing areas and have used the lacquer tree for a long period,the Lisu have accumulated a set of rich lo-cal knowledge related to the lacquer tree. The Lisu people divide the tree into “male trees”and “fe-male trees”. The male lacquer tree is called“Yipuzi” in the Lisu language,and it does not pro-duce seeds;the female tree is called “Yimazi” in the Lisu language,and it produces seeds. The Lisu traditionally plant lacquer trees. February and March is the time for planting,however,the surviv-al rate is highest if the trees are planted in March. The Lisu personify lacquer trees, and believe that they are “born”. This clearly shows the Lisu people’s love for the lacquer tree. In the past, the Lisu who lived alongside the Nu River produced lacquer seed oil by themselves. In the 1980s,seri-ous environmental destruction led to the exhaustion of this resource,and some families had to purchase lacquer seed oil. Henceforth, the trade in lacquer seed oil started. Lacquer seeds mature in October and Novem-ber of each year. Thus, this is also a good season for picking lacquer seeds. Picking lacquer seeds re-quires some skill. Usually, the men climb the trees to pick the seeds, and the women stand below the tree,passing tools to the men and taking the seeds from the men’s hands. The next day,the women dry the seeds in the sun,and keep them in the storage area of the house. When November and December arrive,it is time to press the lacquer seeds to make oil. Normally,after they complete the work of pick-ing lacquer seeds, they will tap the raw lacquer. The way of cutting the tree to tap the raw lacquer is to cut a long and thin strip from which the raw lac-quer flows into a wooden barrel or bamboo tube. The Lisu use raw lacquer to paint wooden bowls, rice cabinets, bureaus, tables, desks, and coffins, etc. Its function is to prevent worms, increase the brightness of the objects,and also prolong their li-fespan. Bai, Naxi, Tibetan, and Pumi carpenters who live around the Lisu use a lot of raw lacquer produced by the Lisu. Therefore, the raw lacquer has developed an economically mutual complemen-tary relationship between the Lisu and their neigh-bors. For thousands of years, the Lisu planted lac-quer trees,collected the seeds,pressed the seed to make oil,and ate a diet which relied upon lacquer seed oil. Lacquer seed oil has become deeply fused with their daily life. Nowadays,many young people among the Lisu have left their homeland to make a living in the eastern coastal areas. Although they left their homeland,they still cannot separate them-selves from lacquer seed oil. They always bring plenty of lacquer seed oil with them. When they cook chicken with lacquer seed oil,they always in-vite their fellow villagers or friends from the outside to share the food together. They say that this is“the taste of the homeland!” It is chicken cooked with lacquer seed oil that connects the Lisu in“the other’s area” with their homeland. When they go back to their homeland the following year,a chick-en cooked with lacquer seed oil is a prerequisite dish for their first meal. These migrant Lisu uncon-sciously have become transmitters of their Lisu cul-ture —through their dietary culture, they have let the outside world understand Lisu culture —“an ethnic people who eat lacquer seed oil”. Hence, their ethnic confidence is promoted, and their so-cial network is also expanded. The Lisu in Nujiang also do not forget to bring some lacquer seed oil as gifts when they go to Burma to visit their relatives. Because Burma does not produce lacquer seed oil, the Lisu in Burma only can acquire lacquer seed oil through visiting relatives or by going directly to Nujiang and Weixi to buy the oil. Only through this way,has their habit of eating lacquer seed oil been preserved. Hence,lacquer seed oil has become very expensive in Burma. In short, to the Lisu, lacquer seed oil is not only a necessary component of their diet,but it is also an important part of Lisu tradi-tional culture. Lacquer seed oil,as a kind of dietary culture, is also an important gift for exchange a-mong the Lisu. It is a cultural symbol accumulated and inherited in the process of the Lisu’s communi-cation. 2 . The Technology of Making Lacquer Seed Oil Concerning the technology of make lacquer seed oil, there are both traditional and modern ways. The traditional way is the earliest “local way” used by the Lisu to make lacquer seed oil. It is labor intensive and takes a lot of time and ener-gy. Therefore, only people in a few remote moun-tainous areas now continue to produce lacquer seed oil in this way. The modern way of making lacquer seed oil depends on an oil pressing machine. This is the most popular way at present. Nowadays,more and more Lisu people bring the dried seeds directly to the market or factory for processing—this is not only convenient and fast, but also the capacity of the oil press is twice that of the traditional way. The difference between the two techniques is this: lac-quer seed oil produced through the traditional method is more“ pure”—the taste is much better than the oil made using modern technology. This might be related to the production techniques. 3 . Eating Lacquer Seed Oil All parts of lacquer tree are useful. Its raw lacquer can be used to paint woodenware;its seeds can be used to make oil; and its fresh leaves can become a delicious dish. Every July and August, the lacquer tree is full of green seeds. In this sea-son, some people pick the fresh shoots from the male tree and cook it as a vegetable. However,not many people eat lacquer shoots;the most important food for them is the oil. The Lisu often enjoy lac-quer seed oil with meat, or with chicken or with eggs. In addition,lacquer seed oil is also taken as a kind of medicine and used together with worm-wood, ginger, and so forth. The popular foods cooked with lacquer seed oil include chicken with lacquer seed oil,sweet water with lacquer seed oil, tea with lacquer seed oil, wormwood boiled with lacquer seed oil, porridge with lacquer seed oil, etc. As the best cooking oil of the Lisu, lacquer seed oil is used to cook lamb,beef,pork,fish,etc. It could be said that in the Lisu’s diet,lacquer seed oil is not only a kind of cooking oil,but also a spe-cial feature of the Lisu diet. 4 . The Cultural Function of Lacquer Seed Oil As discussed above, Lisu food cooked with lacquer seed oil is plentiful. However,they all have following common characteristics: it is used as cooking oil; it is normally used to make soup, sometimes also used to fry food( such as a fried egg or pancake, etc. ); and, it plays a role of dietary therapy. 1 ) It reflects the living wisdom of the Lisu and their brave spirit. In history,the Lisu who live in the“three par-allel river” area have accumulated experience with regard to growing lacquer trees,eating lacquer oil, and have created innovative and various kinds of food using lacquer oil. The oil not only satisfied the requirements of cooking oil, but it also became a function of dietary therapy. Because the lacquer tree can provoke an allergic reaction, eating its oil is not possible for other ethnic people. However,in the eyes of the Lisu people,the lacquer tree is full of “treasure”—its shoots can be used as a vegeta-ble;its seeds can produce oil;its raw lacquer can be taken as natural oil paint;and its branches can be made into farming tools and furniture, etc. The fire place of the Lisu will not burn lacquer wood, because burning it can easily result in a fire disas-ter. All of this local knowledge has been accumula-ted from the daily life of the Lisu,and is a reflec-tion of the living wisdom and brave spirit of the Lisu. 2 ) Lacquer Seed Oil reflects the hospitality of the Lisu Generally, to those Britain missionaries who entered the Lisu area during the early years of the 20th century, the Lisu were an ethnic group who loved peace,and loved to make friends. There is an old saying that says “drink this cup of wine,then, we become friends!” The Lisu’s “tongxinjiu” or“wine for connecting hearts” is well - known. However, their hospitality is normally expressed with receiving guests with lacquer oil chicken and“xiala”. They use this to express their hospitality, wisdom and bravery. 3 ) An inheritance of traditional moral and reli-gious concepts. The planting and usage of lacquer trees by the Lisu reflects the Lisu’s understanding of nature,and their concept of a harmonious relationship with the nature. In the Lisu’s concept, nature ( i. e. the lac-quer tree ) is equal to human beings, because the tree has an aspect of “human nature”( the lacquer tree is divided into male and female) . The taboo of the Lisu when they make and eat lacquer seed oil chicken,and the custom of “chicken divination”reflects the Lisu’s religious concept—through divi-nation using a chicken to predict what will happen in the future. This reflects that primitive religious concepts have deeply merged with the local people’s way of thinking, and influence their daily life and religious behavior. An ordinary lacquer seed oil chicken not only describes the Lisu’s dieta-ry scenery,but also represents the Lisu’s moral and religious concepts in their daily life. The lacquer seed oil chicken is very popular among the Lisu, and they still kept the cultural customs of chicken divination. This is an inheritance of the Lisu’s primitive religious beliefs. Moreover, the rule of food allocation while eating the chicken, and use the lacquer seed oil chicken to receive the guests and so forth, are also an inheritance of traditional culture. 4 ) Lacquer Seed Oil and Social Communica-tion Network Building among the Lisu During the process of growing lacquer trees, picking seeds, producing oil, collecting raw lac-quer, cooking and eating a diet based on lacquer seed oil,the Lisu are building and solidifying their communication with family members, relatives, neighbors and the outside world. Speaking from an internal perspective, lacquer seed oil is “the taste of the homeland”—it is a symbolic material repre-senting ethnic identity and cohesion; it even be-comes a gift floating across time and space. Speak-ing from an external perspective, the Lisu have built up a connection with other neighboring ethnic groups,such as the Nu, Dulong, Han, Bai, Tibetan and Naxi, through selling lacquer seed oil and raw lacquer. There is a mutual influence on the cultural aspect,and,thus,a dietary cultural circle of “eat-ing lacquer seed oil chicken” has been formed within the multi-ethnic areas where the Lisu are the majority. In conclusion,the lacquer seed oil diet has a close relationship with the Lisu’s living surround-ings. The lacquer seed oil dietary culture accumu-lated from the complicated process of planting the trees to eating lacquer seed oil is not only a repre-sentation of the Lisu’s living wisdom and brave spirit,but it also reflects their ethnic hospitality. Meanwhile, it is also an inheritance of traditional moral and religious concepts, and plays the func-tion of solidifying and building trans-family clan, trans-regional, transnational, trans-ethnic social networks. Hence, the lacquer seed oil food which can be used as food and medicine is an important part of the Lisu’s dietary culture,and is also a sig-nificant cultural symbol of the group.