Elegance? Gong Liu is a tribute to Gong Liu, the ancestor of Zhou Wenwang XII. He led the Zhou family to move to the land of Jian. "Benedict Gong Liu, both pu is long, that is, the scene is just a hill, and its Yin and Yang are in phase, and its flowing spring ... is its original, and its farmland is food. Spend the sunset, live in the wilderness ... " He is "eager to be in the original" and "dying from a hundred springs, looking forward to the original, is eager for Nangang". After Gong Liu took Zhou people to the village, he went to inspect the terrain and chose the settlement address first. He climbed to the top of the mountain, then came down and stood on the flat ground, choosing a place with rich water resources and spacious terrain, where hundreds of springs gushed out and rivers passed by, with their backs on the hills. Let Zhou people live here in peace and stability. Reclaim and level the land on the south slope of the mountain, and draw springs for irrigation. Build cities and houses on a higher platform, and there is a large flat land near this platform for farming. In the poem, "the scene is just a hill" is to set up a standard watch on the hill to measure the sun shadow and determine the length of the sun shadow all the year round. Reflected in this poem, in the 15th century BC, our ancestors were able to set up a table to find directions, and thus "compare their yin and yang" and "measure their sunset". Use this to determine the direction and the four seasons of the year. Gong Liu era has been able to choose the geographical environment of agricultural development and urban architecture.