China is the country that is progressing day by day. I want to tell you about china’s great wall. This wall is made up of stones, bricks, wood & other materials. This wall is built along east to west line of the country. The main purpose to build this wall is to protect the empire of china from the attack of nomadic groups. This wall was built by the Emperor of china named Hin Shi Huang. The height of this wall is 13,171 miles. If anyone wants to add more info regarding this can share his knowledge here.