每日钉一下（上市公司的盈利，为啥长期是上涨的？）

Group 1 - The article discusses the importance of diversifying investments across different asset classes, including both RMB and foreign currency assets, as well as stocks and bonds [2] - It highlights the significance of USD bond funds as a crucial component of investment diversification [2] - A free course is offered to provide systematic knowledge on investing in USD bond funds, along with supplementary materials like course notes and mind maps for efficient learning [2] Group 2 - The article explains why the long-term profitability of listed companies tends to increase, attributing this to two main factors [5] - The first factor is inflation, where companies can raise prices of their goods and services to counteract inflation, leading to overall revenue and profit growth [6] - The second factor is the improvement in production efficiency, driven by technological advancements and urbanization, which enhances overall societal efficiency and productivity [7][8]