TL;DR: According to custom books, when a house was not at peace people of the past held the lễ mát nhà rite: they invited a ritual master or sorcerer to come and offer sacrifices to drive out the malevolent spirits, threw rice and salt to send them away, and obtained a bùa trấn trạch talisman to take home and post on the gate, on the house, and on the bedroom door to keep evil spirits out. This is a custom and folk belief of the Kinh people in the northern delta, recorded in 20th-century custom books; it is not a mandatory rite and has no verified efficacy.
What is the lễ mát nhà rite?
The lễ mát nhà rite is a ceremony led by a ritual master or a sorcerer, intended to drive out malevolent spirits and obtain a bùa trấn trạch talisman when something in the house is not at peace. The book Phong tục thờ cúng của người Việt (compiled by Song Mai and Quỳnh Trang, 2006) records that this rite involved inviting a ritual master or sorcerer to set up an altar, perform a sacrifice to drive out the malevolent spirits, throw rice and salt to send them away, and request a bùa trấn trạch talisman to suppress evil[1]. The same content is recorded by Bùi Xuân Mỹ (2001) in Tục thờ cúng của người Việt[2].
It should be said at once that this is a custom and folk belief, not a religious rule with doctrine or standardized ritual. The custom books cited here are all descriptions of Kinh practices, mainly in the northern delta, from the early to the late 20th century; there is no basis for extending them to the central region, the south, or other ethnic groups.
How was the lễ mát nhà rite performed, and who performed it?
According to the two books above, the person presiding is a ritual master or a sorcerer, and the rite is performed at home. Song Mai and Quỳnh Trang (2006) specify the sequence: the master comes to the house, sets up an altar, offers sacrifices to drive out the malevolent spirits, throws rice and salt to send them away, then requests a bùa trấn trạch talisman and suppresses evil[1]. Bùi Xuân Mỹ (2001) classifies this rite among the household rites of giải hạn (rite to ward off misfortune) and cầu an (prayer for peace and safety), with accompanying prayer texts[2].
The book Phong tục thờ cúng của người Việt (compiled by Song Mai and Quỳnh Trang, 2006) records a notable variant: "In the past, however poor and destitute people were, if they could not hold the rite at home they still had to go to a tĩnh or điện to worship and ask the ritual master for a talisman to take home and post"[1]. This shows that in folk belief, if a family could not afford to hold the rite at home, they could still go to a place of worship to request a talisman, and this was considered an alternative. The book does not specify what kind of place of worship a tĩnh or điện is, nor does it describe the offerings, timing, or cost in detail.
As for scope, the books record this practice only among the Kinh, mainly in the northern delta, and do not say whether it was common in rural or urban areas, nor how often it was performed. Readers should take this as a description of custom within a particular geographical and temporal scope, not a general picture for the whole country.
Where was the bùa trấn trạch talisman posted, and for what purpose in folk belief?
The bùa trấn trạch talisman was posted on the gate, on the house, and on the bedroom door, with the aim of keeping evil spirits out according to folk belief. Song Mai and Quỳnh Trang (2006) record exactly those three locations[1]. Bùi Xuân Mỹ (2001) also states that the bùa trấn trạch talisman was posted at the gate, on the house, and on the bedroom door to keep evil spirits out[2].
In the same group of talismans there is also the bùa yểm mả (talisman for suppressing at the grave), used to ward off worms: the talisman is rolled up, placed in a bamboo tube sharpened at one end, and driven deep into the ground in front of the gravestone[1]. This detail shows that in folk belief, talismans were associated not only with living space but also with burial space, and each type of talisman had its own function rather than being a single all-purpose item.
A clear distinction is needed: the books only describe the posting of talismans as a custom; they do not prove that talismans are effective. This article also does not instruct how to make talismans, does not copy talisman characters, and does not name places that make them. Readers interested should regard this as data about a custom that once existed, not as practical instruction.
How did Phan Kế Bính (1915) describe and critique the sorcerer?
In Việt Nam phong tục (1915), Phan Kế Bính describes the sorcerer as a person who specialized in offering sacrifices to drive out evil when someone was ill, and he frankly commented that the art "has never been of any use to life." This is descriptive material by a Confucian scholar of the time, with a comment from a reformist viewpoint, not a methodical field study[3].
As for description, Phan Kế Bính writes: "When someone is ill, they believe spirits cause the illness, so they invite a sorcerer to offer sacrifices and drive out evil"; the master sometimes holds a staff and strikes it throughout the house to drive away spirits, sometimes makes a straw snake with a mechanism inside so it can move and crawl, making those who do not know think it is a marvelous power[3]. He also records the custom that when a household member died and was missed, people invited a sorcerer to "cảnh phan" so that the deceased's soul could enter a medium and speak; the master sets up an altar for the sacrifice, beats drums and clappers, makes hand gestures and chants, causing the medium to fall into a trance[3].
Notably, Phan Kế Bính also records love talismans and bewitching talismans among the sorcerer's methods, and recounts traditional tales about sending spirit soldiers to throw stones and bricks at other people's houses[3]. These details belong to the category of "traditional tales"; the author himself does not assert they are true.
As for critique, Phan Kế Bính writes: "Sorcery is a mystical art that has never been of any use to life. People do not examine matters thoroughly; they just see novels telling absurd stories and believe them to be real, which is truly harmful"[3]. This is the opinion of a specific author, not a scientific conclusion, but it shows that even among intellectuals of the early 20th century, belief in sorcery was criticized.
Table comparing related customs
| Custom | When performed | Who performs | Belief | Recorded in |
|---|---|---|---|---|
| Lễ mát nhà rite | When the house is not at peace (the book does not give a specific time) | Ritual master or sorcerer | Offer sacrifices to drive out malevolent spirits, throw rice and salt to send them away | Song Mai and Quỳnh Trang (2006)[1]; Bùi Xuân Mỹ (2001)[2] |
| Requesting a talisman at a tĩnh or điện | When the rite cannot be held at home | Ritual master | Request a talisman to take home and post | Song Mai and Quỳnh Trang (2006)[1] |
| Posting the bùa trấn trạch talisman | After the rite | Household members | Keep evil spirits out | Song Mai and Quỳnh Trang (2006)[1]; Bùi Xuân Mỹ (2001)[2] |
| Suppressing talisman before the grave | After burial (the book does not specify the time) | Sorcerer | Ward off worms | Song Mai and Quỳnh Trang (2006)[1] |
| Offering sacrifices to drive out evil when ill | When someone is ill | Sorcerer | Believed to be caused by spirits | Phan Kế Bính (1915)[3] |
Where the books disagree or are silent
The books cited do not agree on whether the lễ mát nhà rite required a sorcerer or only a ritual master: Song Mai and Quỳnh Trang (2006) use both terms, while Phan Kế Bính (1915) speaks only of the sorcerer in the context of offering sacrifices to drive out evil when someone is ill[1][3]. It is also unclear what kind of place of worship "tĩnh" and "điện" refer to in Song Mai and Quỳnh Trang's book.
The books cited do not indicate when the lễ mát nhà rite originated, how widespread it was, or how it differed between localities. The books also do not say what offerings were included, how long the rite lasted, or who paid the costs. These points should be read as gaps in the sources, not as confirmed facts.
Relation to other cầu an (prayer for peace and safety) customs
The lễ mát nhà rite belongs to the same stream as other Vietnamese cầu an customs such as choosing an auspicious day for departure, offering sacrifices for a new vehicle, and hanging peace talismans. These customs all share a common belief: there are invisible risks that need to be prevented by ritual or sacred objects. To read more about this group of customs, see the article Xem ngày xuất hành, cúng xe mới, treo bùa bình an.
It should be emphasized that the custom books cited here only describe customs; they do not advise whether to practice them or not, nor do they promise any spiritual benefit. Today's readers may regard this as material about the religious life of Vietnamese people in the past and decide their own attitude.
