Interpretation of the tree: cultivation, cultivation. Metaphor training talents is a long-term solution. It also means that it is not easy to train talents.
Source "Pipe Total Repair": "One year's plan is nothing more than a tree valley; The ten-year plan is nothing more than a tree; A lifelong plan is nothing more than a tree. "
Everyone in the west knows the use case ~, so we should do a good job in talent training.