This calendar app is a comprehensive time management tool designed for Taiwanese users, featuring:

## Core Features
1. Calendar Display:
- Displays Gregorian and lunar dates simultaneously
- Supports Republic of China year display
- Offers quick month/year switching
- Supports portrait and landscape modes
- Auto-displays Taiwan’s statutory holidays and festivals via API

2. Event Management:
- Add, edit, and delete events
- Supports multiple event types (birthdays, tasks, activities, holidays, etc.)
- Recurring event settings (daily, weekly, monthly, yearly)
- Event reminder feature

3. Notebook Function:
- Supports multiple notebook categories
- Notes can include text and images
- Search and manage notes

4. Holiday and Festival Display:
- Auto-displays statutory holidays and festivals
- Supports lunar festivals (e.g., Lunar New Year, Mid-Autumn Festival)
- Displays 24 solar terms

5. Data Backup and Restore:
- Supports local backup and restore
- Data export and import functions

## Technical Implementation
This app prioritizes user experience and Chinese user needs, offering robust lunar features and festival displays, making it a complete time management and note-taking tool.