Collect and learn! 9 figures to understand the knowledge points of the Great Wall

The Great Wall is a representative symbol of the Chinese nation and an important symbol of Chinese civilization, embodying the Chinese nation's spirit of unremitting self-improvement and patriotic feelings of unity, perseverance and perseverance. As the largest existing cultural heritage in mainland China, how long is the Great Wall?

How much do you know about the protection of the Great Wall? For more knowledge points, stamp the picture ↓

Source: Beijing Daily