Group 1 - The stock market is experiencing high-level fluctuations, with the Shanghai Composite Index, large-cap blue chips, mid and small-cap stocks, and the ChiNext board all showing volatility [1] - Implied volatility in financial options is gradually decreasing to a relatively low average level [1] - Strategy recommendations include using ETF options for constructing covered call strategies, neutral double selling strategies, and vertical spread combination strategies; index options are suitable for neutral double selling strategies and arbitrage strategies involving synthetic futures [1]