Group 1 - The article emphasizes the importance of diversifying investments across both RMB and foreign currency assets, as well as between equity and bond assets, highlighting the role of US dollar bond funds in this strategy [2] - A free course is offered to provide systematic knowledge on investing in US dollar bond funds, including course notes and mind maps for efficient learning [2] Group 2 - The article discusses the impact of rising oil prices, particularly in the context of a regional conflict that led to a nearly 50% increase in oil prices from December 8, 2025, to March 9, 2026 [5] - It identifies three main products that would benefit from a significant increase in oil prices, with a focus on crude oil funds that track oil price movements through futures [5] - The article warns that while crude oil funds can generally track oil prices, they may experience significant tracking errors during extreme market conditions, making them less suitable for ordinary investors [5]