Asalam-u-alikum! This is the brief description of Great wall of china. The presentation is made by Karachi university's energetic students for their English Assigment.

4. One of the Greatest wonders of the world.
Listed as a World Heritage by UNESCO in 1987.
Ancient gigantic defensive project.
Largest construction projects ever completed.

6. Idea of Great wall of China is taken from
“The Rectangle Wall”.
Great Wall is not only one long wall.
Made up of a number of Interconnecting
walls.
Four Periods of Great Wall
1. Qin Dynasty (208 BC).
2. Han Dynasty (1st century BC).
3. Northern and Southern Dynasties (1138 – 1198).
4. Ming Dynasty (1368-1620).

7. The Qin dynasty first constructed the wall.
Built by connecting parts of the walls
belonging to the past ducal states.
Resembled a gigantic dragon.
Took about nine years to finish this grand
project.
Took many lives and a great deal of money.
Served its role as a defensive force.

8. Han Dynasty lasted over 400 years.
The Great Wall is Extended 10,000 km into
Western China.
Most intense building period.
Longest stretch of wall ever built.

9. Four dynasties built and added to the
Great Wall.
1. The Northern Wei (386-534).
2. The Eastern Wei (534-550).
3. The Northern Qi (550-577).
4. Northern Zhou (557-581).

10. Wall's Importance reaches a new Height.
The Great Wall we see today was built
mainly in the Ming Dynasty.
Took over 100 years to complete.
Longest stretch of wall ever built.
Ming Emperor remained busy in making this
wall throughout their reign.

12. The main reason why the Chinese built the
Great Wall was to prevent troops from the
north invading Chinese territory.
Another great reason is to defend China
from attacking Mongols.
It was also built as a defense against
ferocious nomadic tribes.
The Great Wall also embodies a great deal
of protection during a battle.
 An important purpose of the Great Wall was
to house troops.
 Housing troops was important because, if the
Great Wall was under attack, soldiers could just
come out and defend China.

14. The Great Wall was constructed with
natural materials.
Earlier, the Great Wall was mainly built from
earth, stones and wood.
Mostly bricks were used due to light weight.
Builders always tried to use local sources.
Stones from the mountains were used over
mountain ranges.
It indicates a great achievement in
architecture.

16.  Primary types of man-made sabotages.
1. The taking of bricks, earth and stones.
2. Modern construction.
3. Tourism access development.

18. Never deface the bricks.
Never move the bricks.
Never throw litter about.
Do not take bricks, stones and earth
from the wall.
 Officials should enforce relevant regulations
and laws.

20. Lots of beautiful legends and stories
took place.
Meng Jiangnu's story is the most famous .
Jiayuguan Pass story.
Beautiful stories and legends about the
Great Wall help to keep alive Chinese history
and culture.

21. To build the wall in uniform forms and
materials is impossible.
The Ming Dynasty was the last dynasty that
ever built the wall.
Since then, the wall gradually fell out of use
as fortification.
Wall still stands there telling a glorious
history created by its people.

23. The most important component of the
defensive project on the Great Wall.
The prescribed distance between two
Beacon Towers was about 15 miles.
Built at the highest points like mountains.
Beacon towers were built by using local
materials according to the local conditions.
Wall contain three types of Beacon Towers.
Deliver military information by producing
smoke or by lighting a fire.

24. Built at a distance of every approx 1 km.
Used to transmit military messages.
Two-storied watchtowers were built on the
Great Wall in strategic places.
Used to house troops, store weapons and
send signals to military.
 Some towers are standing complete and
others are crumbling. Many have been
rebuilt.