Render the real terrain in UE4 instead of manually drawing the terrain. Firstly, the geographic data of the specified area is obtained from the geospatial data cloud, and then the area is selected more accurately by using the GlobalMapper, and the data is converted into a format that can be recognized by the WorldMachine, which generates accurate terrain. Finally, import UE4 to modify details and add material.

To use the real-world terrain in UE4, first log in to the opentopographyorg website, find "FINDDATAMAP" in the website, click SELECTAREGION, and then click the place with Raster option. By exporting DSM data, all other options can be turned off. Finally, remember to fill in your email address, and then click Submit to submit.