The Great Wall of China 40°26′16.86″N 116°33′42.84″E / 40.4380167°N

The Chinese worked on the Great Wall for over 1700 years. In turn, each emperor who came to power added pieces of the wall to protect their dynasties. But the wall was not a solid wall. It was a line of disconnected barricades.

First Emperor Qin wanted a much better barricade to protect his people from the Mongol invaders to the north. He wanted a strong wall 30 feet wide and 50 feet high. First Emperor Qin used peasants, captured enemies, criminals, scholars, and anyone else who irritated him, and put them all to work building the Great Wall. Laborers were not paid for their work. It was slave labor.

About 3000 people worked on the wall during the Qin Dynasty. Rocks fell on people. Walls caved in. Workers died of exhaustion and disease. Laborers were fed only enough food to keep them alive. There is an old Chinese saying, "Each stone in the wall represents a life lost in the wall's construction.

This project continued long after First Emperor Qin’s death. Building the wall was a project that continued for many hundreds of years until the wall was over 3700 miles long. Most emperors used the same system that Qin used, forced labor.

The Great Wall of China was mainly built from earth, stones and wood. The use of bricks was a later development. Owing to the enormous amount of quantities of raw materials required to construct the Great Wall of China, the builders usually used materials that were available easily. For example while building over the mountain ranges, the stones of the mountain were used; while in the plains earth was pounded into solid blocks to be used in construction, whereas in the deserts, the sanded reeds and juniper tamarisk were put to use.