Group 1 - The core concept of fund advisory is to address the issue where funds make profits, but investors do not [4] - Fund advisory services are designed to help investors achieve better returns through professional guidance [5] - The article promotes a free course on fund advisory, which includes notes and mind maps for efficient learning [5] Group 2 - Bond fund yields are influenced by several factors, including the duration of the bond, safety, and interest rates [8] - Longer-term bonds typically offer higher yields but also come with greater volatility [10] - Safety of bonds is categorized into interest rate bonds (e.g., government bonds) with high security and credit bonds (e.g., corporate bonds) with certain default risks [12] - Higher safety in bonds usually correlates with lower yields, while riskier bonds require higher returns to attract investors [13] - Interest rates significantly impact bond values, with declining rates leading to rising bond prices (bull market) and increasing rates leading to falling prices (bear market) [18]