I read a book called "Scarcity," where the author presents a large number of experimental cases to illustrate several points. Scarcity is having less than the demand. The scarcity mindset captures attention, reduces cognitive and executive function, and exists in the subconscious, affecting our perception of the surrounding world. In summary: the scarcity trap leads to living beyond one's means, not knowing how to allocate resources, and feeling helpless in other aspects of life. It makes people become foolish and impulsive. We have to rely on our limited mental capacity to get by as fluid intelligence and executive control weaken. Life becomes difficult this way. I thought of the three segments Mr. Lu mentioned: distinguishing right from wrong, distinguishing big from small, and distinguishing far from near. I also thought of the concepts of "nothing outside the mind" and "no principles outside the mind." In the words of Mr. Wang Yangming, the scarcity mindset is when one's nature is enslaved by external factors, leading to a loss of autonomy. The foreign solution is to set up a warm buffer zone through external adjustments, emphasizing the need for leisure. For example, starting to save when one has just received a generous paycheck. In contrast, Mr. Wang Yangming addresses the essence of the problem directly, telling you to maintain a clear mind and make wise choices even within the constraints of scarce resources. In comparison, the foreigners put in so much effort to create a scientifically rigorous and grand approach, but it is merely superficial; they really do not understand the depth of what ancient sages studied.