This article described the dynamics of the inter-ethnic and regional relationships of the Lao, a group that speaks the Tai language in northeastern Thailand and Laos P.D.R. The focus was on the definition of "Lao" by describing an individual process in explaining others in one's own way, which viewed "others" with a subjective process in the groups of Lao and non-Lao. The author noted that "Lao-ness" in villages could not be found, even asking the Lao and non-Lao. What was recognized to be better was to let the image of Lao-ness come from memory stories in relation to their experiences that reflected the methods of creating biological personalities of others in order to perceive the differentiation process and complexity of Lao identity in the local contexts under the creation of nation-states. In memories of the villagers, ethnic relationships could be observed from activities, for instance, barter trade, commerce, intermarriages, mobility to seek new farmlands, or evacuation from wars. These relationships extended from interactions with nearby groups and neighbors to relationships at the state level. Migration was especially important. Motivations to migrate were not only for the need for natural resources, but also the need for better status at the local level. Lao society was developing a strong and concrete relationship with other ethnic groups in the region. Perspectives and views from previous experiences toward others were accummulated until they became the line of demarcation for one another. Certain lines were good, but others were discarded. They were not only an expression of cultural distinction to others, but they also created their ethnic identity in the age of consumerism. That is the expression of being Lao, an expression to differentiate themselves from others in the perspective of socio-economic, political and cultural superiority, which was deep rooted in the memories and shared experiences of the interrelationships in the region. This aspect was a strategy to change themselves to suit the social system with interactions and changes of the outside world (pp. 232, 243, 245).