Even if watching AV, in the end, it's for practical experience. The previous chapter discussed a lot about "kissing," with the purpose of doing rather than just watching. Watching without doing, wouldn't that become Yin Jiu You? Watching too much AV without practice definitely harms health. But doing involves risk issues. Any position involved carries risks, and unless the market moves in a certain way, even the simplest moving average system can't guarantee beforehand exactly how to "kiss." Those familiar with this ID's interpretation of "The Analects" know that risk is "not to be feared," it has no rank, and any reckless pursuit of absolute risklessness in investment is wishful thinking. The only way is to set up a system that makes the risk, which has no rank and is "not to be feared," become ranked within that system. The "fearful" system is the only way to long-term market victory. It must be based on one's actual situation, such as funds, operational skills, etc., and establish a classification evaluation system. Then, according to this system, set up corresponding response procedures for all possible situations. In this way, all risks are managed in an operable manner. The only thing the operator needs to do is, once a corresponding situation occurs, take the appropriate action. For stocks, the actual operations are nothing more than three types: buy, sell, hold. Of course, in practice, there's also a matter of quantity, which relates to fund management, so let's temporarily set that aside. Therefore, any investment operation evolves into a simple mathematical problem: N completely classified risk scenarios, corresponding to three choices (buy, sell, hold). For example,