What simple machines were used to build the great wall of china?

Simple Machines allowed the builders of the Great Wall of China to build more quickly and efficiently. Machines such as levers and inclined planes allowed the amount of energy spent to do the work to be decreased. Other machines such as pulleys allowed objects to be transported up and down the wall with greater ease. Wedges were incorporated in the hammers that the Chinese used to pound the earth and all the materials of the Wall together.