In the investment market, as long as you live long enough, you will find that there are always some people in the market who think they have discovered some amazing short-term rules or data that can make a lot of money, so they are very excited, and some people even sell them publicly. money. But in fact, someone has discovered and verified it a long time ago. If it is really effective, it will definitely lead to no profit in the end, not to mention that it is invalid in most cases. The so-called rules are just random repetitions in a random process.