What's the difference between the tree on the ridge of the knife and what Zhao Zi said?

Both are different in strength and cross section.

The axe cuts straight from top to bottom, and the saw pushes and pulls in parallel, which are different in strength; Secondly, the section of the axe is smooth, but not neat, and the section of the saw is neat, but not smooth; Third, the axe is difficult to use, but the saw is difficult to use.

Saws and axes have their own functions. Axes can chop wood, chop wood, chop branches, etc. However, it is laborious and time-consuming to use larger trees and dry branches, and it is not very effective to cut them with an axe. Saws are big and small. The big saw can be pulled by two people, and the small saw can be pulled by one person. When the saw is pulled down, the wood surface is flat. Axe cutting will not be very smooth, because the wood is different, so choose tools.