Choosing well-known large companies for financial investment is generally considered relatively safe for the following reasons: 1. **Stability**: Well-known large companies usually have a strong market position and a stable operating history, and are relatively less likely to face financial difficulties or bankruptcy risks. 2. **Information transparency**: Large companies are usually subject to more regulatory requirements, with higher information transparency, and investors can more easily obtain financial reports and related market analysis. 3. **Brand trust**: Well-known companies usually have a strong brand and customer base, which can provide companies with competitive advantages and the ability to withstand market fluctuations. 4. **Risk diversification**: Large companies tend to have diversified businesses and a wide range of operations, which helps to diversify risks and are not easily affected by a single market fluctuation. However, investing in well-known large companies is not without risks. Market fluctuations, industry adjustments, and the company's own operating problems may still affect investment returns. Therefore, when making decisions, investors still need to comprehensively consider the market environment, personal risk tolerance, and portfolio diversification. At the same time, you can also consider obtaining professional financial advice to develop an investment strategy that better suits your financial goals.