When was the earliest application of engineering survey in ancient China?

When Dayu was in charge of water control, farmland boundary control began, and measurement tools and technologies were applied.

The scientific research objects of surveying and mapping are mainly the shape and size of the earth and the geometric shapes and spatial positions of various objects on the surface of the earth, with the aim of serving people to understand and transform nature. Because of the different research fields and scopes, surveying can be divided into topographic surveying, geodesy and photogrammetry. Geodetic survey can be divided into conventional geodesy and satellite geodesy. Photogrammetry is a surveying and mapping science, which uses photographs to study the shape and size of surfaces. Because of the different methods of obtaining photos, photogrammetry can be divided into ground photogrammetry and aerial photogrammetry