tushare-data 是做什么的？
A Tushare data research skill tailored for Chinese natural language queries. It converts requests like "How is this stock doing lately?", "Help me check financial trends", "Which sector is strongest recently?", "What are northbound funds buying?", or "Export some market data for me" into executable workflows for data fetching, cleaning, comparison, filtering, export, and brief analysis. Suitable for research scenarios involving A-shares, indices, ETFs/funds, financials, valuations, capital flows, announcements/news, sector concepts, and macroeconomic data.