I. INSTRUCTIONS: MUOI TWO FANS DUYEN. Everyone wants to understand why we have, since when, life and death. All of these questions are caused by causes and conditions, the Buddha taught, there are 12 causes and conditions. Understanding these 12 causes and conditions will help a lot on the way to study, a person who can attain Pratyekabuddha status is someone who understands these 12 causes and conditions. II. TWENTY CAUSES: Human is the main force that generates things; Condition is the auxiliary power for the main energy to arise. Dependent origination is only for things to be born when there are enough conditions and dependent origination is for the relation that gives rise to things. 1) TYPES: There are twelve kinds of causes and conditions: Ignorance, Actions, Consciousness, Fame and Form, Six Inputs, Contact, Feeling, Craving, Grasping, Being, Birth, Lao Tzu. 1) Ignorance: True Suchness and Ignorance are one body as if two sides of the same coin, obscured by confusion. True Suchness is Ignorance. Ignorance is the root cause of all sins, making us drift in suffering, it is the basis of the following 11 things: 2) Action: It means action, because ignorance causes problems. translates into actions, and ignorant actions cause many sins, thereby tying sentient beings to samsara. The two dishes of Ignorance and Actions, if they are distributed to cause and effect in three lifetimes, they belong to the karmic cause in the past and will have results in the present. 3) Consciousness: Because of confusion and action, it creates discriminatory Karma, misunderstanding. Because of this misunderstanding, one should cling to having Energy as oneself, having Department as an external object, thereby preserving one's own life, having emotions of joy, sadness, and hatred... Consciousness is one of the three elements "Tho, ovum, consciousness" to conceive and form the body and life. 4) Name-and-form: Name is an abstract noun such as Feeling, Perception, Action, Consciousness Aggregate, without image, just a state that appears depending on the realm. Rupa is the form of an inanimate object with a state of self-destruction due to the cold and heat of the weather. This is mainly about the aggregate of form, which is caused by the combination of the four elements: Earth, water, fire, and wind, which indicates the total sambhogakaya of sentient beings while still in its state and gradually growing. Having Karma is a cycle, so when the mind passes life to another life, thanks to the mind (name) and the blood of parents (form) in harmony and dependence, life flourishes and exists. 5) Six senses: When life is formed and grows (conceives), the six senses are formed (fetus), that is, the six senses: Eye, Ear, Nose, Tongue, Body, and Mind have an object. The six senses are: Form, Sound, Flavor, Taste, Touch, and Dharma. The six ceilings are in contact with six senses, so it's called Luc import. When the fetus is still in the womb, the fetus is indirectly exposed through the mother. 6) Scoop: Touch and treat; that is, after the fetus is born, there is contact between the senses and the external environment, but because they are still about 1 or 2 years old, children do not know how to judge happy, sad, good, bad ... because there is not enough reason. Mind to distinguish, feel clearly, subtly, so in this stage it is called contact. 7) Life: Feeling, receiving life. This is the stage when the child is about 3 to 13 years old, the child's life with the external environment has progressed, the child knows love, hate, anger, sadness, joy, passion ... Five dishes: Consciousness, Fame, and Six Entry , Contact, and Feeling are distributed into the cause and effect of the three lifetimes, then they belong to the present result, caused by the past karma of ignorance and action. 8) Ai: Craving. Due to knowing sadness, love and hate, craving arises between the ages of 14 and 19, this is puberty. Love what you like and hate what you don't like. 9) Defense: Take hold. From the age of 20 onwards, The body grows strong, the craving is stronger, so if you love something, you want to keep it. It is because of the pursuit of satisfaction that there are good deeds and bad deeds that create good and bad karma that must suffer consequences in the next life. 10) Being: Because Ai and Thu are the causes of karma, one must have a (becoming) body in order to receive good and bad retribution. The three items: Ai, Thu, and Friendship are distributed in the three lifetimes of cause and effect, they belong to the present karmic cause. 11) Birth: Life. Common to the total sambhogakaya of sentient beings (mind and form), which includes both physical (physical) and mental (psychological), lives for a period determined by Karma. 12) Lao Tzu: The stream of human life to aging and death. Two items: Birth, Lao Tzu distribute cause and effect in three lifetimes, they belong to future retribution. 2) CLASSIFICATION AND FUNCTIONS: A) Classification: There are three sets: 1) Or: It is only for a state of mental confusion, so the assessment is very wrong. Ignorance, craving, and attachment fall into this category. 2) Karma: Only for wrong actions emanating in body, mind; They include: Action and Being. 3) Suffering: The result of suffering is caused by karmic causes of confusion (ignorance, craving, clinging) and wrong actions (actions, existence). Consciousness, name, form, six sense organs, contact, life, birth, old age and death are retribution caused by the above causes. B) Function: - In order to end samsara and free suffering, we must eliminate the illicit causes of karma: Ignorance, Love, Holding, Action, Being. Thus, there will be no retribution in the present and in the future: Consciousness, name-and-form, the six sense-doors, contact, feeling, birth, old age and death. - The end of the illegal human karma, is not to let the false mind be confused, so wisdom is clear. - Those who specialize in observing, studying, and practicing according to the Twelve Causes and Conditions, eliminating illicit karma, escape from samsara and attain the status of the Buddha. III. CONCLUSION: Understanding the Twelve Causes and Conditions, we can understand why people suffer, why they have to be reincarnated in the six realms. We must study, observe, study diligently and at the same time encourage others, to study together, to work diligently together, to liberate all suffering and bondage in the cycle of birth and death.END=NAM MO SHAKYAMUNI BUDDHA.( 3 TIMES ).WORLD VIETNAMESE BUDDHIST ORDER=BUDDHIST DHARMA WHEEL GOLDEN MONASTERY=VIETNAMESE BUDDHIST NUN=THE WOMEN OF THE SAKYA CLAN CHAN TANH.AUSTRALIA,SYDNEY.5/1/2022.VIETNAMESE TRANSLATE ENGLISH BY=VIETNAMESE BUDDHIST NUN=THE WOMEN OF THE SAKYA CLAN CHAN TANH.