What do you mean by three for five for orange, blue, green and brown?

Orange-blue-green-brown-three-five exchange is the arrangement formula of network cables and lines, and its specific meaning is as follows:

Sort the network cables from left to right according to orange white, orange, blue white, blue, green white, green, brown white and brown, then switch the positions of the third line (orange line) and the fifth line (blue line), pinch them flat and cut them neatly.

This formula is a method to facilitate people to remember the line order of network cables. In fact, it is to adjust the position of two lines, so that the original disorderly line order becomes neat and orderly.