For a considerable period of time, I felt that investing in the cryptocurrency field was enough because at a certain stage, investing in this field seemed to be very profitable, and even looked down on investing in the US stock market at that time. Over the years, I have been forced to learn and broaden my horizons, gradually discovering that the US stock market is a completely different landscape. Sometimes, the cryptocurrency market crashes while the US stock market remains calm, and occasionally the opposite occurs. This kind of hedging balance not only makes people feel more at ease, but also helps to hold onto long-term chips. My core holding logic for investment products now is one word: "long". If there is no desire to hold for the long term, I don't want to touch it at all. This long refers to... In terms of years, I usually consider the future trend for 5 years, If there are risky options within the next 5 years, I will not consider them. Even if I occasionally buy some options with small change, I will buy long-term options for about 1 year, and I am likely to get the option exercised, unless it goes crazy and abnormal halfway. Therefore, "long" has become the depth of my investment logic, and expanding into different markets has also expanded the breadth. It is difficult to have both depth and breadth of investment. However, if you are determined to grow in the investment market, you must think and learn, especially for those who mix and imitate in the cryptocurrency market. Studying the US stock market may have more opportunities, and I cannot guarantee that you will lose less money. At least, there is still market closure time there.