� Market Selection Simplification:
- Remove all Chinese text from CLI interface
- Remove Hong Kong Stock support (as requested)
- Keep only US Stock and China A-Share markets
- English-only error messages and validation
� Supported Markets:
1. US Stock
- Examples: SPY, AAPL, TSLA, NVDA, MSFT
- Format: 1-5 letter stock symbols
- Data Source: Yahoo Finance
- Pattern: ^[A-Z]{1,5}$
2. China A-Share
- Examples: 000001, 600036, 300001, 688001
- Format: 6-digit numeric codes
- Data Source: TongDaXin API
- Pattern: ^\d{6}$
� Technical Changes:
- Simplified market selection function
- Removed Chinese text from all user-facing messages
- Maintained TongDaXin integration for A-shares
- Kept format validation and data source routing
- English-only interface throughout
✅ Test Results:
- Market Selection: ✅ Pass
- Supported Markets: ✅ Pass (US + China A-Share only)
- Ticker Validation: ✅ Pass (English messages)
- Data Source Routing: ✅ Pass
- English-Only Interface: ✅ Pass
� User Experience:
- Clean English-only interface
- Two clear market options
- Automatic format validation
- TongDaXin real-time data for A-shares
- No language barriers for international users
Supported Chinese Exchanges:
• Shanghai Stock Exchange: 60xxxx
• Shenzhen Stock Exchange: 00xxxx
• ChiNext Board: 30xxxx
• STAR Market: 68xxxx
1c6b54a48e