基本功 | 想知道市场温度如何？关注这些指标！

Group 1 - The core idea emphasizes the importance of foundational knowledge in investment and fund selection, suggesting that solid fundamentals are crucial for successful investing [2] Group 2 - Common indicators to gauge market sentiment include margin trading balance, northbound capital flow, and volatility index, with margin trading balance and northbound capital flow being more direct indicators [3] - A rapid increase in margin trading balance indicates a strong willingness among investors to use leverage [3]