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+# Lists
+Markdown supports ordered lists and unordered lists.   
+---
+# Unordered Lists  
+Use asterisk `*` , plus sign `+` or hyphen `-` as markers. Add a space after the marker before writing content.  
+- item
+- item
+- item
+---
+# Ordered Lists
+Ordered lists are used to display steps or items that require a specific sequence.  
+To create an ordered list, use a number followed by a period. Example:  
+1. First item
+2. Second item
+3. Third item
+
+### Non-consecutive numbers
+Markdown will automatically reorder the items even if the numbers are not consecutive:  
+`1. First item  
+3. Second item (displayed as 2)  
+7. Third item (displayed as 3)`  
+
+1. First item  
+3. Second item (displayed as 2)  
+7. Third item (displayed as 3)
+
+### Start from a specified number
+5. Fifth item
+6. Sixth item
+7. Seventh item
+---
+
+# Nested Lists
+Lists support nesting to build multi-level structures.
+
+### Nested Unordered Lists
+- Fruits
+  - Apple
+    - Red apple
+    - Green apple
+  - Banana
+  - Orange
+- Vegetables
+  - Carrot
+  - Chinese cabbage
+
+### Nested Ordered Lists
+1. Preparation
+   1. Collect materials
+   2. Make a plan
+2. Implementation
+   1. Start execution
+   2. Monitor progress
+3. Summary
+
+### Mixed Nesting
+1. Main tasks
+   - Subtask A
+   - Subtask B
+     1. Step 1
+     2. Step 2
+   - Subtask C
+2. Minor tasks
+
+Add 2 or 4 spaces before sub-list items to realize mixed nesting:
+1. First item:
+    - First nested element
+    - Second nested element
+2. Second item:
+    - First nested element
+    - Second nested element
+
+### Nesting Rules
+- Indent sub-lists with 2 to 4 spaces (2 spaces recommended)
+- Keep the indentation consistent
+- Nesting can be unlimited, but it is recommended to use no more than 3 levels in practice
+
+---
+
+# Task Lists (Checkbox Lists)
+Task lists are an extended feature of GitHub Flavored Markdown and are widely supported nowadays.
+
+### Basic Syntax
+\- \[ \] Incomplete task  
+\- \[x\] Completed task  
+\- \[ \] Another incomplete task  
+
+### Practical Example
+## Project To-do List
+### Design Phase
+- [x] Requirement analysis
+- [x] Prototype design
+- [ ] UI design
+
+### Development Phase
+- [ ] Front-end development
+  - [x] Page layout
+  - [ ] Interactive functions
+  - [ ] Responsive adaptation
+- [ ] Back-end development
+  - [ ] Database design
+  - [ ] API development
+  - [ ] Performance optimization
+
+### Testing Phase
+- [ ] Unit testing
+- [ ] Integration testing
+- [ ] User acceptance testing
+
+### Usage Tips
+- The space and letter `x` inside the brackets are required: `[ ]` and `[x]`
+- Task lists can be combined with nested lists
+- Ideal for project management, study plans and daily checklists
+- Checkboxes can be toggled by clicking in some editors
+
+---
+
+# Advanced List Skills
+### Multiple paragraphs inside a list item
+\> Blockquotes are also available inside list items  
+1. First item
+
+   This is the detailed description of the first item. Keep the content indented and aligned.  
+   This is another paragraph.  
+
+2. Second item
+
+   > Blockquotes are also available inside list items
+
+### Line breaks inside a list item
+- This is a long list item.  
+  Add indentation to wrap text on a new line.
+- Another list item.
+
+---