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 preparing 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 identify which one suits them best, along with strategies for profit-taking [2] Group 2 - It clarifies a common misconception that fund investment requires unlimited cash flow, explaining that it is about converting human capital (like salary and bonuses) into financial assets [6][7] - The article outlines the life cycle of cash flow, indicating that from birth to age 25, individuals primarily incur expenses, while from age 25 to retirement, they can save and invest [8][9] - It presents a model of income and expenses, noting that the main investment period is from age 25 until retirement, estimating around 1800 weekly investments or 450 monthly investments until retirement at age 60 [10][11]