Things to Know about the Great Wall of China

1. The Great Wall Extends for 21,196.18 Kilometers

The Great Wall of China is considered the largest man-made construction project in the world. Its entire route extends for more than 20,000 kilometers, running from the eastern coastline to the deserts in the west of northern China. Crossing mountains and plateaus, the wall rises and falls across the landscape like a giant dragon.

2. Fifteen Major Passes Stretch from East to West

The Great Wall extends through 15 northern Chinese provinces, municipalities and autonomous regions. Its route reaches from the Bohai Sea in the east to the Gobi Desert in the west, approximately 2,500 kilometers away. Along this enormous route, 15 passes were constructed at locations considered especially important from a geographical and strategic perspective.

3. Construction Continued for More Than 2,000 Years

The construction history of the Great Wall spans more than two millennia. Around 220 B.C., China’s first emperor, Qin Shi Huang, connected remnants of earlier defensive walls, fortifications and earthen structures to create a unified defensive barrier.

One example is the “First Pier of the Great Wall,” which was constructed from rammed loess in 1539 A.D. It demonstrates how different sections of the Great Wall were built during different periods using locally available techniques and materials.

4. The Great Wall Is Actually a Network of Fortifications

Despite its name, the Great Wall is not simply one continuous wall. It is a complex defensive system consisting of many different structures. Beacon towers, defensive barriers, barracks, military garrison stations and fortresses were positioned along the walls and worked together as an integrated system of protection.

5. Builders Used a Wide Range of Materials

Different sections of the Great Wall were constructed with materials suited to their surrounding environment. Many of the sections that remain today were made from bricks and carefully cut stone blocks, with lime mortar used to bind the bricks together.

In areas where bricks and shaped stone were difficult to obtain, builders relied on locally available resources. These included compacted earth, rough stones and wood, allowing the wall to be constructed across a wide variety of landscapes.

6. The Eastern Gateway Meets the Sea at Shanhai Pass

Shanhai Pass is a fortress dating from the Ming Dynasty, which lasted from 1368 to 1644, and is regarded as the easternmost major pass of the Great Wall. It lies near Qinhuangdao City on the coast of Bohai Bay, approximately 305 kilometers from Beijing.

Because of its strategically important position, Shanhai Pass earned the famous title “First pass under heaven.” Its location allowed it to serve as a crucial defensive point where the Great Wall approached the sea.

7. Jiayu Pass Marks the Western Frontier in the Gobi Desert

At the opposite end of the Great Wall lies Jiayu Pass, a famous frontier fortress built during the Ming Dynasty. It is recognized as the first major fortress at the western end of the Ming-era Great Wall.

Of the hundreds of passes associated with the Great Wall, Jiayu Pass is also considered one of the best-preserved examples still standing today. Its location in the Gobi Desert highlights the enormous geographical range covered by the Great Wall.

8. The Legend of Lady Mengjiang Tells an Ancient Love Story

The story of Lady Mengjiang is regarded as one of the four great love legends of ancient China. According to the tale, her husband was sent away to work on the construction of the Great Wall and eventually stopped sending news home.

Worried about him, Lady Mengjiang traveled a long distance carrying warm winter clothing for her husband. When she finally arrived, however, she learned that he had already died. Overcome with grief, she cried so intensely that a section of the Great Wall collapsed.

9. Ancient Workers Left Their Marks on the Bricks

In some sections of the Great Wall, inscriptions can be found on the bricks. One explanation suggests that General Qi Jiguang introduced this practice as a way to evaluate the quality of bricks produced by soldiers and establish responsibility for their construction.

However, historians have questioned whether this explanation is completely accurate. The inscriptions have therefore remained a subject of historical discussion and interpretation.

10. The Great Wall Is One of China’s Greatest Cultural Symbols

The Great Wall represents the combined efforts of countless workers over a period of more than 2,000 years and stands as an extraordinary achievement of engineering. Beyond its defensive function, it also reflects the encounters, conflicts and exchanges between agricultural societies and nomadic civilizations.

During the Yuan Dynasty, dated here to 1272–1368, Juyong Pass served as an important transportation route connecting Beijing with Inner Mongolia. Yuan emperors frequently traveled between these regions along this route, which led to the construction of temporary imperial residences, temples and gardens along the way.

Today, the Great Wall remains one of the most powerful cultural symbols of China, representing both the remarkable engineering achievements of ancient civilizations and the long history of interaction between different peoples and cultures.