Dai Viet

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Kingdom rankDai Viet
Dai Viet.png
Primary culture
Vietnamese (Kinh)

Capital province
Dong Kinh (613)

Autocracy Government monarchy.png

State religion

Technology group
ChineseChinese technology group
Dai Viet ideas

For Flag of Dai Viet Dai Viet, Flag of Annam Annam and Flag of Tonkin Tonkin.

Traditions.png Traditions:

+1 Attrition for enemies
−15% Culture conversion cost

Infantry combat ability.png The Great Proclamation

+10% Infantry combat ability

Yearly prestige.png Confucian Revival

+1 Yearly prestige

Fort defense.png Autonomous Villages

+20% Fort defense

National manpower modifier.png Village Militia

+25% National manpower modifier

Core-creation cost.png Don Dien

−10% Core-creation cost

Yearly legitimacy.png Thuan Thiên

+1 Yearly legitimacy
+0.05 Mandate growth modifier

Technology cost.png Literary Reform

−5% Technology cost

Idea bonus.png Ambition:

+10% Morale of armies

Dai Viet is a mid-sized country in Southeast Asia. In 1444, they border Flag of Ming Ming, Flag of Champa Champa, and Flag of Lan Xang Lan Xang. If they can maintain their independence from Ming they have the potential to expand greatly in the region and colonize the rich islands around them.

Vietnamese minor states[edit]

The kingdoms of Flag of Annam Annam and Flag of Tonkin Tonkin break off from Dai Viet in later historical starts, starting from 1527.


This is a list of all Flag of Dai Viet Dai Viet's events:[1]


Msg event.pngConfucian Heritage

Ever since the Chinese occupation the reverence of Confucius and the Confucian ideals run deep in our society. From the basic worship of Confucius in the folk religion of the commoners to the admiration and study of Neo-Confucian texts in our court.
Though the clergy would not agree, some would say that we are a Confucian country first and a Mahayana Buddhist one second.

This event happens only once during a campaign.
Trigger conditions
  • State religion is NOT Confucianism Confucian
  • is Flag of Dai Viet Dai Viet
  • State religion is Mahayana.png Mahayana
  • is not AI
  • is at peace

The year is before 1500.

Mean time to happen

60 months

Event button 547.png
We are a civilized people and revere the Masters.
  • Flag of Dai Viet Dai Viet, its ruler and heir convert to Confucianism Confucian
  • Mahayana.png Mahayana becomes a Harmonized Religion
Event button 547.png
Confucianism is interesting but Dai Viet is a Buddhist country.

Flag of Dai Viet Dai Viet gains 20 Yearly prestige.png Prestige


Msg event.pngLe Nghi Dan's Reforms

Emperor Le Nghi Dan has proposed various reforms concerning the government and the economic well-being of our kingdom. While many of these proposals make great sense, they will also be expensive and may cause unrest. What shall we do?

This event happens only once during a campaign.
Trigger conditions
  • The country is Flag of Dai Viet Dai Viet.
  • The year is at least 1460 but before 1470.
Mean time to happen

200 months

Event button 547.png
Administrative reforms

Dai Viet gains Administrative power.png100 administrative power.

Event button 547.png
Diplomatic reforms

Dai Viet gains Diplomatic power.png100 diplomatic power.

Event button 547.png
Military reforms

Dai Viet gains Military power.png100 military power.

Effects after selecting any option

If Dai Viet has not enacted one of the highest tier government reforms

  • then Dai Viet gains Reform progress growth.png 15 government reform progress.

Msg event.pngThe Rivalry of the Mac and Trinh Families

Two great families vie for the power of regent of this nation, the Mac and the Trinh. Because of this power struggle, the nation has slid into anarchy, with armed bands supporting one side or the other roaming the countryside. We can only hope that their feuding will end soon.

This event happens only once during a campaign.
Trigger conditions

The country:

  • is Flag of Dai Viet Dai Viet.
  • is ruled by the “Mac” dynasty.

The year is at least 1527.

Mean time to happen

200 months

Event button 547.png
Curse their interminable feuding!

A random core province of Dai Viet gains Local unrest.png2 local unrest.

Event button 547.png
The feud must stop, now!

Dai Viet loses Administrative power.png20 administrative power.


Msg event.pngThe Tay Son Rebellion

After years of corruption, mismanagement, and famine, the people of our nation have apparently had enough. They have risen up in rebellion under the leadership of the Tay Son brothers. What shall we do?

This event happens only once during a campaign.
Trigger conditions

The country:

  • is Flag of Dai Viet Dai Viet.
  • has a stability lower than 0.

The year is at least 1700 but before 1800.

Mean time to happen

200 months

Event button 547.png
Crush the rebels

Anti tax rebels.png Peasants (size 2) rise in revolt in 3 random core provinces of Dai Viet.

Event button 547.png
Negotiate a peaceful settlement

A random core province of Dai Viet that is not the capital:

  • gains Local autonomy.png 100% autonomy.


Starting position[edit]

Dai Viet revolves around two major strategies: The first, annexing neighbours while improving its military quality; and the other, colonizing and expanding into the Pacific islands while slowly doing it in the mainland. Despite starting with less development than any of the other Big Four (Itself, Flag of Lan Xang Lan Xang, Flag of Khmer Khmer and Flag of Ayutthaya Ayutthaya), Dai Viet's unique geographical position on the edge of Indochina lets it pinch Lan Xang and Khmer between itself and the strongest power, Ayutthaya, allowing the player to succeed in taking out those two nations and dealing with Ayutthaya next.


Picking rivals at this point is pretty straight forward. Flag of Champa Champa, in the south, should always be the first objective, as it is the weakest and most isolated nation in the region. The other two most likely should be rivalling back enemies. Allying with some of the stronger powers in Burma, such as Flag of Ava Ava or Flag of Pegu Pegu can be a good idea depending on what rivals Flag of Ayutthaya Ayutthaya picks, although it is not necessary since Dai Viet is strong enough on its own to dissuade AI attackers on traditional difficulties. Flag of Malacca Malacca is one of the best potential allies as they can be used to block in and flank Flag of Ayutthaya Ayutthaya, the strongest nation in the region who you will have to eventually face.

Early Game[edit]

Dai Viet begins with two forts, but it is recommended to destroy the fort in Thanh Hoa to save money. The fort on the capital can also be destroyed, as wars will be won largely by taking out the opposing army before sieging, but having a Level 3 fort can be somewhat useful against AI.

Immediately begin fabricating claims on Flag of Champa Champa, as they are the easiest route of expansion for Dai Viet. Declare war on Champa as soon as the claim is finished since Khmer will likely also attack Champa as soon as they can. During the war with Champa, you can use your starting navy to blockade the Level 3 fort on their capital to quicken the siege. It is also recommended to hire the cheap Free Company mercenaries, as they cost less than normal troops and do not use your manpower. Focus on stackwiping Champa's army first, as you then want to siege all of their provinces to prevent Flag of Khmer Khmer from taking land for themselves. Use your starting transport ships to move troops past Champa's fort. Once Champa is annexed, it is recommended to simply culture convert Cham culture once it is possible, as the culture is too small to justify taking up an entire culture slot that could be better used on large cultures in Burma and Maritime Southeast Asia. Dai Viet's starting idea is very useful for this, as well as exploiting tax development from Cham provinces. Remember that adjacency is important for making culture conversion cheap.

The next target is most likely Flag of Khmer Khmer, who is usually attacked by Flag of Ayutthaya Ayutthaya, and Flag of Lan Xang Lan Xang, who often suffers the same fate.

Early on, Dai Viet will likely obtain the event Confucian Heritage which will give the player the option to convert to Confucianism Confucian or stay Mahayana.png Mahayana. Although it may seem sensible to become Confucianism Confucian, as most of China is as well, Confucianism Confucian is one of the worst religions in the game in a normal playthrough. This is because Confucianism Confucian and Harmonization bonuses are mediocre at best and Confucians are unable to convert the religion of provinces properly without tanking a large amount of Harmony, causing unrest in the early game, the part of the game where rebels are most dangerous. Although harmonizing religions is a way around this, not only is it very long, but you will then discover that you cannot convert the culture of provinces with a harmonized religion, essentially locking you out of doing so and ironically creating more unrest. In addition, going below 50 harmony gives horrendous negative modifiers, thus penalizing the player for attempting to use Confucian's only mechanic to quickly harmonize many religions, something Dai Viet will need to do given the variety of religions that can be found near it.

Culture and Religious Routes[edit]

Although the Southeast Asian culture group is alright, converting to Chinese or Malayan culture can be much more profitable as it gives larger cultural unions. If the primary culture is swapped to Malayan (most likely with Cham or Filipino), then all of Maritime Southeast Asia becomes extremely profitable to take, allowing the player to easily become stronger than Flag of Ming Ming and stomp them. Converting to Chinese does not need an explanation on why it is powerful, especially with the more reliable Ming destabilization introduced in 1.29, which can allow a player to stomp Ming and force them to explode.

Religiously, Mahayana.png Mahayana is one of the weakest religions in the game. Idea cost.png -5.0% Idea Cost is a very mediocre modifier, so it is really like this religion only has Discipline.png +5.0% Discipline and Diplomatic reputation.png +2.00 Diplomatic Reputation. Therefore, swapping religions is a great idea that will strengthen your Vietnam.

Dai Viet can immediately swap to Vajrayana.png Vajrayana at the beginning of the game for the cost of Yearly prestige.png -100 Prestige and Stability.png 1 Stability. This will give Vajrayana's base bonus of Morale of armies.png +5.0% Morale of Armies, which is great, unlike Mahayana.png Mahayana's base Idea cost.png Idea Cost. Theravada.png Theravada can also be swapped into, but its base modifier, Advisor cost.png -10.0% Advisor Cost, is not that good compared to Vajrayana's Morale of armies.png Morale of Armies, especially since every nation can already gain cheap advisors with the estate privileges. In addition, swapping to Theravada.png Theravada will remove one of Mahayana.png Mahayana's perks which is preserved with Vajrayana.png Vajrayana: its religious isolation, allowing you to utilize the Deus Vult Casus Belli from Religious Ideas as well as the Clergy privilege Expansionist Zealotry, which gives another Morale of armies.png +5.0% Morale of Armies.

Another great religion to swap to is Hinduism Hindu, although this will lock you out of using the Mandate CBs on Flag of Ming Ming. Hinduism Hindu is quite a bit stronger than Vajrayana since it has many good modifiers and versatility, especially with States General or Republic government. However, Sunni Islam Sunni, accessible in Borneo or the Malaya peninsula, is much stronger and by far, the best religion to access disregarding the Mandate CB.

As mentioned, Dai Viet gets an event early on that gives the option of converting to Confucianism Confucian with Mahayana.png Mahayana already harmonized. Since Confucian is trash unless the player is playing a mass blobbing game (WC, or similar) the primary reason players would convert to Confucianism is so the conquest of China is easier. However, it is more worth it to simply convert China to another religion long term, outside of big blobbing games, of which Confucian is not even the best religion. Sunni is easily accessible and allows you to tolerate all heathens instantly while providing far stronger bonuses.


Disciples of Enlightenment icon
As Dai Viet, have 10 nations follow the Mahayana Faith by 1500.


  1. The script code of these events can be found in /Europa Universalis IV/events/flavorDAI.txt.
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