ArcGIS generates the steps to generate contour polygons from point layers and reduce the aliasing of the Rasters

First, open ArcMap and load the corresponding point layer and boundary polygon layer

Second, Arctoolbox--spatial Analyst Tool--difference analysis-Inverse distance weighting method, followed by the following settings

Click Environment for detailed settings

The next step of setting "cell size" is the key to resolving aliasing, and masking is the main function of setting the plot range

Determined after success

Generate Raster Data: Right-created layer--export data

Third, generate contour lines

Arctoolbox--spatial Analyst Tools-Surface analysis-Contour lines

Label the appropriate fields

ArcGIS generates the steps to generate contour polygons from point layers and reduce the aliasing of the Rasters