Du Mu said in his commentary on Sun Tzu's Art of War: The power of a rolling stone does not depend on how heavy the stone is, but mainly on how high the mountain is; whether a soldier is brave or timid does not depend on his character, but mainly depends on where you place him. What a situation. The key to investing is to observe the trend. There are three types of momentum: momentum, terrain, and situation. The team, project sponsor, and community are the momentum; the position of the project in the big cycle is the terrain; the situation is the situation based on people. You can mainly refer to whether the investor's mood is panic or greed. , whether the market is hot or cold...if you put these three trends into any project, you can see the clues.