每日钉一下（商品类ETF有哪些呢？）

Group 1 - The article emphasizes that fund investment is a suitable method for lazy investors and discusses how to effectively implement it [2][3] - It highlights the importance of preparation before starting a fund investment and how to create a solid investment plan [2] - The article introduces four different investment methods and encourages readers to determine which method suits them best, along with strategies for profit-taking [2] Group 2 - The article mentions that commodity ETFs, including gold ETFs, are essential for global investment alongside stocks and bonds [6] - It explains that gold ETFs typically have slightly lower returns than physical gold due to management fees (around 0.5% annually) and cash reserves for redemptions [7] - The convenience of trading gold ETFs and the assurance against counterfeit gold are noted as advantages of investing in these funds [7]