What do you mean, don't damage the surveying markers?

Don't destroy the measuring mark to avoid failure.

"Survey mark, please don't destroy it" is a mark placed when measuring the position of control points, which means that the survey mark can't be destroyed artificially, so as to avoid the failure of the survey mark and the measurement error.

Surveying mark is a mark to calibrate the position of ground surveying control points. Surveying and mapping departments usually leave it on the ground after establishment and measurement, and can calculate its plane position and height on the ground.