The famous sentence mentioned by Su Shi in "Topic Xilin Wall" is: I don't know the true face of Lushan Mountain, but I am only in this mountain.

Brief analysis:

These two poems are about reasoning on the spot and talking about the experience of traveling in the mountains. The reason why we can't recognize the true face of Lushan Mountain is because we are in the middle of Lushan Mountain, and our vision is limited by the peaks and valleys of Lushan Mountain. What we see is only one peak, one ridge, one hill and one valley, which is only partial, which is bound to be one-sided. These two sentences are fantastic, and the whole artistic conception is completely revealed, which provides readers with a space to recall their experiences and gallop their imagination. It's not just traveling in the mountains and rivers that leads to this rational understanding. This is what you see when you visit mountains, and it is often the case when you observe things in the world.

These two poems have rich connotations, which enlighten people to understand a philosophy of dealing with people. Because people are in different positions and have different starting points, their understanding of objective things is inevitably one-sided. To know the truth and the whole picture of things, we must go beyond the narrow scope and get rid of subjective prejudice.