In poetry appreciation, what is the combination of point and surface?

Face refers to the rough outline of the background, and point refers to the subtle drawing on the background. There are many forms of point-surface combination, which can be real points on the imaginary surface or static points on the moving surface. For example, Zhu Dunru's "Good Things Close": "Shake the world of mortals first, and get drunk without season. Green clothes and green hats are used to put on snow. Go fishing in Ding Feng in the evening, and it's crescent moon. Thousands of miles of water and sky are the same color, and it is lonely and bright. " Among them, the wind determines that the fishing line is a point, the upper and lower crescent moon, the water and the sky are the same color, and the combination of point and surface is to make the description three-dimensional.