Markdown is a lightweight markup language commonly used for writing documents, blogs, README files, and more. Here are some commonly used Markdown syntax:
1. Headings#
# H1
## H2
### H3
#### H4
##### H5
###### H6
2. Paragraphs#
Paragraphs need to be separated by a blank line.
This is a paragraph.
This is another paragraph.
3. Emphasis#
*Italic* or _Italic_
**Bold** or __Bold__
***Bold Italic*** or ___Bold Italic___
4. Lists#
Unordered Lists#
- Item 1
- Item 2
- Subitem 2.1
- Subitem 2.2
Ordered Lists#
1. Item 1
2. Item 2
1. Subitem 2.1
2. Subitem 2.2
5. Links#
[Link Text](URL)
For example:
[Google](https://www.google.com)
6. Images#

For example:

7. Blockquotes#
> This is a blockquote.
8. Code#
Inline Code#
This is an `inline code` example.
Code Blocks#
```language
Code block content
For example:
```python
def hello_world():
print("Hello, World!")
### 9. Horizontal Rules
```markdown
---
10. Tables#
| Header 1 | Header 2 | Header 3 |
|----------|----------|----------|
| Content 1| Content 2| Content 3|
| Content 4| Content 5| Content 6|
11. Task Lists#
- [x] Task 1 (completed)
- [ ] Task 2 (not completed)
These are some basic syntax of Markdown, mastering these can help you quickly write formatted documents.