Yesterday’s events are still vivid in your mind, as real as if they had just happened. But they have already vanished completely into nothingness. Don’t even think about yesterday; think about what you were doing just a minute ago. That scene has already disappeared forever from our lives, leaving only a fleeting image in our minds. Like a VCR playing a historical clip, everything we can remember has already returned to nothingness. Nothingness is the true essence of this world.

We can carefully observe and ask ourselves a question: Where is my heart? Is it in the physical heart itself? In which specific part of the heart? In a particular cell? Or is it in the brain? In which part of the brain? Left or right side? Where do our countless emotions and thoughts come from? From the heart? If so, from which specific part? This is a very profound question, worthy of your contemplation and exploration for a very long time. 

When you miss someone, observe where exactly this "missing" is. Is it in your heart? In your mind? In which part of your brain? In which cell? Is it in the left or right side of your brain? In which part of your body? 

Finally, you will observe that this "missing" is nowhere to be found. It is empty, just a void of information in the void. This void of information controls our brains and our behavior. 

Emptiness means "ZERO" which is very simple yet difficult to experience because it indicates a different logic in how our system works and how one should "think." It offers a completely different perspective from what we typically experience in our lives. It's not something entirely distinct, but rather an alternative way to perceive things. Emptiness signifies complete absence — no space, no scale, no time, no duality—all within a singular state.

In emptiness, there's no difference between "me" and "others." It's just the manifestation of one entity. "Me" is part of "others," and "others" are part of "me." So, doing good to "others" is kind of doing it for yourself, and bad things are the same. That's why the saying goes, "The more you give, the more you get." The same applies to hurting others; the more you do it, the more it comes back to you.