Using the name as a breakthrough to explore the life information and studying it as an academic subject, countless scholars at home and abroad have tried their best to "create" various methods and develop and improve them.

(1) Numerical Category

Numerical category refers to converting the strokes of the characters in the name into numbers. That is, by using the standard form of Chinese characters (according to the Kangxi Dictionary), simplified characters, or the stroke count in numerology, or directly determining auspiciousness or misfortune with the "81 number", or converting the numbers into other contents such as the Heavenly Stems and Earthly Branches, the Five Elements, the Eight Trigrams, and the Nine Palaces, forming so-called "Eight Trigrams School", "Sixty Jiazi School", "He Luo School", etc.

Example 1

35 Number: Steady and introverted, elegant development number (very auspicious)

Poem: A very auspicious number, defending to attack, business is stable, wealth flows smoothly.

28 Number: Family detachment, lonely number (inauspicious)

Poem: A fish in dry land, difficult to escape misfortune, this number is very inauspicious, better to change the name.

Example 2, Liu Dehua (Name Eight Trigrams Analysis)

Taking numbers to obtain trigrams, the original trigram is the Trigram of Thunder and Wind, representing the fortune from 1-10 years old and throughout life.

11-20 years of age, the moving trigram is the Great Strength Trigram.

21-30 years of age, the moving trigram is the Minor Excess Trigram.

31-40 years of age, the moving trigram is the Liberation Trigram.

41-50 years of age, the moving trigram is the Ascending Trigram.

51-60 years of age, the moving trigram is the Great Excess Trigram.

61-70 years of age, the moving trigram is the Constant Trigram.

71-80 years of age, the moving trigram is the Great Strength Trigram.

Analysis: Original trigram: Represents initiative, positivity, perseverance, resilience, strict self-discipline, quick response, pursuit of success, good financial management, and strong organizational skills.

Moving trigram: ... From 31 to 40 years old, the major period will enter a decisive stage in career, previous efforts will be reaped at this time, or end and start new work. In terms of friendship, there may be separation or misunderstandings with good friends.

31st year of flow: The career will enter a slow development phase, with many meetings and social occasions. In terms of friendship, many new friends will appear at this time, but few can truly help.

(2) Character Category

The character category of name studies analyzes and predicts auspiciousness or inauspiciousness through the study of the characters themselves in the name. There are the "Character Shape School" that judges based on the shape of the character; the "Radical and Stroke School" that combines radicals and the birth year's zodiac for prediction or uses the relationship between radicals for prediction; and the "Divination School" that uses traditional divination methods to change the characters in the name for prediction, among others.

(3) Sound Category

The sound category of names categorizes the Chinese characters into five categories according to their pronunciation: earth sound, metal sound, wood sound, fire sound, and water sound. Then it determines based on the relationships between the Five Elements.

Earth sound: Vowel a o e ie ai ei ao ou an en ang eng ong

Metal sound: Front friction sounds j q x z c s i

Wood sound: Tongue root sounds g k h zh ch sh r

Fire sound:舌尖音，d t n l

Water sound: Lip explosion sounds b p m f w

Wood sound - mainly related to liver, blood, tendons, bones, and nervous system.

Fire sound - mainly related to heart, tongue, eyes, and cerebellum.

Earth sound - mainly related to digestive system, limbs, and skin.

Metal sound - mainly related to respiratory system, large intestine, and nose.

Water sound - mainly related to reproductive system, endocrine system, urinary system, and bones.