Echo Zhuangzi said in his article "Autumn Water" : "Autumn water arrives." At the beginning of the text, people feel that a wide and clear river flows from a distance, wandering slowly in the quiet autumn. Because the river is wide, the scene on both sides is small. When Zhuangzi said that he could not distinguish a cow from a horse, he meant that the space was so vast that he could not distinguish the shape of a cow from a horse. I think he's trying to gently remind us of our visual limitations. I sat on the windowsill, watching the autumn water in front of the window, and saw a ship untethered drifting farther and farther away, until it was a black dot, until at last it was out of sight. I think of Zhuangzi's description of "the boat that is not tied", we always tie the boat in front of the eyes can see, perhaps "autumn water", this boat, not in front of me, but can go with the current to the end of the world. How far can our vision really see? How small can our eyes perceive? In both the East and the West there were exquisitely crafted works of art. An entire copy of the Heart Sutras or the Ode to the Red Cliff is carved on a piece of ivory the size of a grain of rice. When viewed with a magnifying glass, the lines, thinner than a hair, are smooth and graceful, as good as those of a famous calligrapher. In the 17th century, still life painting was popular in the Netherlands. On the table was a plate with a fish on it. The fish was covered with scales, and the scales reflected thin reflections. The art of skilled craftsmen challenges the limits of vision, but also challenges the limits of manual skills, like athletes to challenge the speed or height of the limit, once beyond the limit of difficulty, will cause onlookers to cheer and scream. Today's autumn water clearly did not make me cry out for joy, I only saw a ship cast off the line, drifting farther and farther out of sight, so that I knew the limits of my vision. In addition to the limits of vision, there may also be the limits of mental perception. That dark dot that was getting farther and farther away, I knew it was a boat. In the long volume of Huang Gongwang's "Living in the Fuchun Mountains", ships are an ink line in the blank. A ship is not necessarily a fine visual identification. It can be a small black dot in the wide and clear horizon of autumn water. It is not the existence we see, but the existence we know rationally. We can do an experiment, take the recognizable objects in the vision gradually far away, so far that the object is unrecognizable, the vision is critical, the vision is hopeless. But at the edge of visual despair, perhaps, is where the mind's vision begins to unfold. Visual despair, but make people realize: our proud vision, how much invisible things. A ship, do not have to retreat far, the visual is just a black dot. How far does a mountain need to retreat? How far does an autumn water need to retreat? Because of Zhuangzi, many artists from the visual craftsman slowly transition to the spiritual vision of the pursuers; From being satisfied with the skill limit of cheering and screaming, step by step, understanding the skill limit is still far away from the quiet tolerance of beauty. They know the limits of vision, they know the humility between heaven and earth. They began to back away, back to see the mountains just ink halo, see the water just blank. They abandoned the joy of cheering and screaming, they like the original arrogant "river Bo" in the autumn water, came to the sea, see the ocean in front of the big, incredible, only to know that they know very little, only "look at the ocean and sigh". Therefore, in the long roll of landscape, the ship can be humble to just a small point, an ink line; Mountains can also be just a small piece of faint ink halo, as for the autumn water, of course, can not mind is a large expanse of white space. I scream at the window into the empty autumn water. The end of the roar reverberated on the water wave, all the way to the other side. On the other side, there was an MRT train heading towards the city. The end sound swirled in the wind, partly drowned out by the sound of cars, and partly carried forward into the valley on the other side. The valley was filled with sound, and the treetops, grass, springs, and crevices echoed, even the thin wings of the insects. I wait, knowing that all the echoes are still lingering on the autumn water.