Why some people 'must go to the field': spirit roots (căn đồng) through practitioners' accounts and how anthropologists read them

Short answer: how is căn đồng told and read?

In the accounts of mediumship practitioners, "căn" is a karmic bond with the saints, and prolonged troubles in life are interpreted as signs that the person must go to the field, meaning undergo the trình đồng mở phủ rite to join a spirit guild. Anthropologists make no conclusion about the presence of deities; they read this process as a path of rebuilding the self and social position, especially amid urbanisation and economic transition.

One limitation must be stated at once: there is currently no quantitative research on the number of people who go to the field or the average cost of a trình đồng ceremony, so no such figures appear in this article. What is presented below comes from ethnographic and anthropological works, that is, the level of consensus evidence in the research community, with author and year noted directly in the sentence.

This article discusses only how insiders tell it and how researchers read it. For the hầu đồng ritual in general and the Mother Goddess heritage of Tam phủ, see two existing articles: What is hầu đồng? The central ritual of Đạo Mẫu and The Mother Goddess worship of Tam phủ: UNESCO heritage and distortions to distinguish.

What is 'căn' in insiders' accounts?

Kind of knowledge: Folk beliefFolk belief. What people believe, avoid or pass on by word of mouth, recorded as a belief, not as a checked fact. The five labelsIn practitioners' language, "căn" or "căn đồng" refers to a relationship believed to exist between a person and the saints in the Mother Goddess worship system. A person with căn is often described as experiencing repeated misfortunes: lingering illness with no clear cause, failed business, family discord, or dreams and events seen as omens. When ordinary solutions bring no result, people seek out a medium teacher, a fortune teller, or temples to ask the cause, and the common answer is that the person has căn and must go to the field.

Nguyễn Thị Hiền, in her study on the path to becoming a female medium in contemporary Vietnam, describes this process as a turning point in the practitioner's life. Before going to the field, the person is often described as being "punished" (bị hành), and after trình đồng mở phủ, many report that their condition changes: illness recedes, work improves, or the mind feels lighter. Notably, this account has a fairly stable structure, from trouble to seeking a teacher, to the trình đồng ceremony, to the change.

How is a typical life story recorded?

In her ethnography, Nguyễn Thị Hiền traces the path to becoming a medium through the accounts of insiders themselves. The common narrative has three stages. The first is the period of trouble: the person recounts years of illness, loss, or deadlock that cannot be explained. The second is the period of seeking: through an acquaintance, a dream, or a temple visit, the person is told they have căn and must go to the field. The third is the period of joining the guild: after the trình đồng mở phủ ceremony, the person becomes a master medium or new medium, has a teaching master, a guild, and begins participating in hầu đồng ceremonies.

Methodologically important is that these three stages are recounted as a completed causal chain, that is, after events have occurred, the narrator rearranges memory into a meaningful story. The researcher does not read this as a record of events but as how people make meaning of their lives.

How do anthropologists read the process of going to the field?

Kirsten W. Endres, in her ethnographic work on lên đồng in Hanoi, places the process of becoming a master medium in the context of the market economy and urbanisation. She describes lên đồng as a stage where practitioners negotiate identity, gender and status. Playing the roles of mandarins, ladies and princesses is not only ritual but also a way for practitioners to experiment with models of power and gender different from those in everyday life.

In a later article, Endres continues to analyse the relationship between role-play and gender norms in urban Vietnam. She shows that masculine and feminine roles in the ritual do not entirely coincide with everyday norms, and this gap creates space for practitioners. For many women, becoming a master medium is a path to prestige, income and networks difficult to attain in ordinary life.

Ngô Đức Thịnh, in his 332-page book on lên đồng, titles the second part "The exchange of status". This naming suggests a reading: going to the field is an exchange, in which practitioners trade for a new status, backed by saints, with a guild and a position in the spirit community. He also approaches lên đồng from psychophysiological, gender and cultural integration angles, placing it in multiple analytical frames rather than one.

Table comparing main readings

Why are insiders' accounts both valuable and needing careful reading?

Nguyễn Ngọc Mai, in her article on in-depth interview methods in anthropological research, shares experience from a case study of lên đồng in the northern delta. She notes that in-depth interviews are suitable for clarifying the nature of issues and motives for action, but information is only accurate when the distance between interviewer and interviewee is nearly gone. To achieve this, the researcher must create empathy and enter the community, for example through the life story method.

The same article raises an important caution: when observing and experiencing in religious research, the researcher is easily influenced by the beliefs of those studied, and may see phenomena from the believer's perspective while forgetting the objective position in analysis. This is why articles like this must clearly separate two levels: the level of insiders' accounts and the level of researchers' analysis.

Do these studies say anything about the effectiveness of going to the field?

The collection edited by Karen Fjelstad and Nguyễn Thị Hiền, gathering anthropological studies on lên đồng in Vietnam and overseas communities, shows this is a field quite systematically surveyed in anthropology. The works in this collection approach lên đồng as a social and religious practice, not raising the question of proving or disproving the presence of deities.

On the practitioners' side, many report feeling lighter, illness receding, work going better after going to the field. As researchers, it can be noted that belief can change behaviour, and behaviour changes outcomes: a person who believes they have resolved their fate may sleep and eat better, be more proactive at work, and thus their life path may shift. That is a real effect arising from belief, not evidence that deities intervened, nor a reason to dismiss insiders' experiences.

When should troubles be considered an illness needing medical attention?

Nguyễn Thị Hiền has a separate article on "yin illness", the diagnosis and treatment in Vietnamese lên đồng. In this understanding, some states are attributed by practitioners to yin causes, and going to the field is seen as a way to handle them. This is the understanding of a belief system, not a medical category.

The boundary must be clear: this article does not discuss diagnosis, does not give medical advice, and has no authority to say when a symptom is yin illness or physical illness. When there are prolonged abnormal health signs, the necessary action is to seek medical examination to rule out medical causes first. This should be said directly, not to dismiss anyone's spiritual experience, but to avoid a treatable trouble being overlooked.

Where evidence is lacking

Kind of knowledge: UnprovenNot enough evidence. Someone has claimed it, but no source or study is strong enough to confirm it. The five labelsThere is currently no quantitative research on the number of mediums in Vietnam, the proportion of people who go to the field after an event, or the average cost of a trình đồng ceremony. The works cited here are mainly ethnographies and case studies, strong in depth and weak in generalisability. Therefore, this article should not be read as a statistical picture of the phenomenon of going to the field.

There is also no long-term follow-up study comparing a group who went to the field with a group who did not, so nothing can be said about a causal relationship between trình đồng and life changes. Accounts of change are data about experience, not data about effectiveness.

Conclusion: read two levels, without judgement

This article presents insiders' experiences with respect, and presents how researchers understand them, without concluding about deities. For mediums, "must go to the field" is a fact in their religious life, tied to a practising community being protected as heritage. For anthropologists, it is a social process that can be observed, described and analysed, in which people rebuild themselves and their position. These two levels do not exclude each other, and readers need not choose a side.