The Great Wall of China, or 长城 (Chángchéng), means "The Long Wall." It is one of the world's most famous landmarks. It was built over centuries by different dynasties to protect the country from invasions. It's not one single wall but a series of walls and fortifications stretching over 13,000 miles! A famous Chinese saying is, "不到长城非好汉 (Bú dào Chángchéng fēi hǎohàn)," which means "He who has never been to the Great Wall is not a true man." It symbolizes perseverance and the incredible achievement of the Chinese people.