Trading in the investment market is like fishing. At the beginning, there is not much experience, and the bait wasted by throwing out the rod may occasionally catch a few fish, but most of the time there is no result. At this time, we will learn from the old angler's experience and skills. What kind of fish is in the water layer of a few meters deep, what kind of fish to put in what bait, and what kind of water area will have fish. With the accumulation of experience, we will inevitably have many achievements in the future. However, after the initial rampage of trading, we have learned to patiently wait for opportunities, understand what kind of market can participate in, what kind of position cannot be broken, where there is water, there are fish, whether we can catch them depends on the angler's skills, whether the market with fluctuations has opportunities, and whether we can make profits. Money depends on the participants' vision and ability to seize opportunities