Full Markdown Syntax Test Document (Ready for Direct Testing)

1. Heading Syntax (6-level Standard Headings)

# Level 1 Heading (H1)

## Level 2 Heading (H2)

### Level 3 Heading (H3)

#### Level 4 Heading (H4)

##### Level 5 Heading (H5)

###### Level 6 Heading (H6)

2. Text Styling Syntax

• Bold Text: Double asterisks / Double underscores for bold content

• Italic Text: Single asterisk / Single underscores for italic content

• Bold + Italic Text: Nested composite text style

• Strikethrough Text: Double tilde strikethrough syntax

• Underline Text: Extended underline syntax

• ==Highlighted Text==: GFM text highlight syntax

• Superscript: 2 (KaTeX sample: ) power mathematical style

• Subscript: HO (KaTeX sample: ) chemical formula style

3. Blockquote Syntax

Single-layer blockquote: Standard Markdown quote paragraph

Multi-layer nested blockquote

Second-level nested blockquote

Third-level nested blockquote

4. List Syntax

4.1 Unordered List (3 Compatible Symbols)

• Dash unordered list item 1

• Dash unordered list item 2

4.2 Ordered List

1. First ordered list item

2. Second ordered list item

3. Third ordered list item

4.3 Nested List (Unordered + Ordered Mixed)

• First-level list
  

  • Second-level ordered sublist

  • Second-level ordered sublist

• First-level list 2
  

  • Third-level unordered sublist

4.4 Task List (Incomplete / Completed)

选项1选项2

5. Mathematical Formula (KaTeX Standard Syntax)

Note: All formulas below use pure KaTeX standard syntax (compatible with Github, Notion, Obsidian, CommonMark). No LaTeX-only redundant commands, fully supported by mainstream Markdown renderers.

5.1 Inline Mathematical Formula

Quadratic formula solution (Core KaTeX inline syntax):

Basic physical constant: (Mass-energy equivalence equation)

Chemical equilibrium formula (KaTeX arrow symbol):

5.2 Standalone Block Mathematical Formula

Euler's Identity (Most famous mathematical identity):

$

Infinite summation series formula:

$

Matrix operation formula:

$

Integral calculus formula:

$

6 Code Block

6.1 Inline code

You can input anything like this print(123) to show an inline code

6.2 code block

1

print('123')