The philosophical idiom "stones from other mountains can attack jade" originally came from this group. However, the whole poem is not intended to explain philosophy, but to praise the beauty of the garden pond. From the perspective of artistic development, it seems to be a logical evolution from observing and praising natural landscapes to man-made landscapes. No matter how beautiful the natural landscape is, it is hard to have it. It is certainly good to build a government office in a beautiful place. But it has caused a lot of inconvenience to work and life. It is almost impossible to move the natural landscape at will. Perhaps it is to reproduce the beauty of the natural landscape around the residence, perhaps because of the selfishness of occupying the beauty of the natural landscape, perhaps to show wealth and luxury, perhaps for several motives, so there is an artificial garden that imitates the natural landscape. It is said that this thing existed as early as the Western Zhou Dynasty. In any case, the emergence of artificial gardens is probably not out of noble motives such as "art for art's sake", and it is not as mysterious as some researchers say. Even if there is such a thing, it should be very late. In an era when transportation is underdeveloped, people's food, clothing, housing and transportation are still problems, external interference is not asked, and financial resources and technology are very limited, the difficulty and cost of building a large-scale garden landscape are completely imaginable. Such an art, however, grows and opens on barren land. Perhaps, history is like this. Subjective motivation and final result are always separated, sometimes even completely opposite. Workers who build pyramids may not worship them as we do. Skillful craftsmen who built the emperor's garden may not be satisfied with their works. This is a unique era, and this is another era.