## Character Biography Method

The character biography method involves writing a detailed character profile for each major character before starting the main text. It is not a simple character introduction, but rather an engineering approach to character construction that delves into the very core of the character's soul.

### The Three-Layer Structure of a Character Biography

#### Layer One: Surface (Externally Observable)

- **Basic Information**: Name, age, physical characteristics (3 distinctive details are sufficient; no lengthy descriptions needed), place of origin, social class.
- **Linguistic Fingerprint**: Catchphrases, speech rhythm (short/long sentences), vocabulary preferences, dialect or professional jargon.
- **Behavioral Habits**: At least 2 signature actions or habits (e.g., pushing up glasses, biting a pen cap), used for silent expression within scenes.
- **Social Relationships**: List 5 or more characters emotionally connected to this one, along with the nature of the relationship.

#### Layer Two: Mid-Layer (Internal Logic)

- **Core Values**: List the 3 things the character values most, and their priority order — when these conflict, the character's choice defines their personality.
- **Trauma/Secret**: Every major character should have at least one secret or traumatic experience they wouldn't easily share — this is the core engine driving the character's arc.
- **Desire and Fear**: Surface desire (what the character thinks they want) vs. deep desire (what the character truly needs); fear is the other side of desire.
- **Cognitive Blind Spot**: The character's mistaken belief about themselves or the world — to be challenged and broken as the story progresses.

#### Layer Three: Deep Layer (Narrative Function)

- **Character Function/Role**: Protagonist / Antagonist / Ally / Mentor / Catalyst / Mirror / Shadow — clarify each character's structural function within the story.
- **Arc Trajectory**: From starting point (state of deficiency) → turning point (forced to change) → ending point (transformation complete/incomplete). Map the character's curve of change.
- **Thematic Embodiment**: Which aspect of the story's theme does this character represent? Every important character should be a facet of the theme.
- **Key Lines**: Pre-establish 3-5 signature lines that run throughout the book for the character — these lines reappear in different contexts, their meaning building layer by layer.

### The Order of Writing Character Biographies

1.  Start with the protagonist's biography — the protagonist is the story's anchor; other characters' functions are defined around the protagonist.
2.  Then write the antagonist's/villain's biography — the antagonist is the protagonist's other half; the two biographies should mirror each other.
3.  Next, write allies and mentors — they compensate for the protagonist's skill gaps or cognitive blind spots.
4.  Finally, write supporting characters — ensure each supporting character has an independent function and avoid overlapping functions.

### Character Relationship Matrix

Place the main characters into a relationship matrix, noting for each pair:

- Nature of the relationship (blood/interest/emotion/ideology)
- Dynamic changes of the relationship (initial meeting → conflict → reconciliation/rupture)
- Secrets or misunderstandings between them
- Key nodes of mutual influence

### From Character Biography to Plot

The core formula for character-driven plot: **Desire + Obstacle + Choice = Action**.

The character's deep desire drives action; action encounters obstacles; obstacles force the character to make choices; choices define the character. Plot is not "what happens *to* the character," but rather "what the character *creates* because of their own desires and flaws."

### Updating the Biography

A character biography is not a static document. During the writing process, when a character makes an unexpected choice, update the biography — this indicates the character has "come to life," surpassing the initial design.