Buying Alibaba shares has different security characteristics from buying shares of start-ups： Alibaba, as a large mature company： -**Advantage**： - It has a deep business foundation, a wide customer base, a strong brand influence and stable cash flow. -It has a long operating history, has certain experience and resilience in responding to changes in various market environments, and its financial situation is relatively stable. -**Limitations**: Its large scale means that the growth rate may not be as fast as that of some start-ups, and it faces fierce industry competition and complex macro-environmental challenges. Expansion in some emerging business areas is not always smooth sailing. Start-up company： -**Advantages**: If a startup company is on a track with great potential and its business model is unique and innovative, once successful, it may achieve explosive growth and bring a huge return on investment. -**Limitations**: The uncertainty faced by start-ups is extremely high. Most start-ups may fail. There are risks of technology research and development, market development, and capital chain fracture. The probability of successful investment is relatively low. Overall, it cannot be simply said that buying Alibaba shares must be safer than buying a start-up company. From a risk perspective, Alibaba's relative risk is relatively controllable, but the potential profit margin may be limited; start-ups are risky, but they may have the opportunity for ultra-high returns. Investors need to comprehensively consider their own risk tolerance, investment objectives, level of understanding of different industries and companies and other factors to make decisions, rather than simply judging safety based on the company's maturity.