What does it mean to be exposed to the sun after cutting down trees?

The behavior of predecessors has brought bad influence to future generations. Exposure to the sun means that the people in front cut down trees and the people behind will be exposed to the sun, which means that the short-sighted and self-interested behavior of a person or a group will bring adverse effects to future generations and society. Exposing predecessors to the sun after cutting down trees warns people to avoid this kind of behavior, but to promote social morality and civic responsibility.