北京 (Běijīng): This term refers to Beijing, the capital city of China. It is not only the political center but also a cultural hub with numerous historical landmarks.
上海 (Shànghǎi): This term refers to Shanghai, one of the largest cities in China and a major global financial center. It is known for its modern skyline, bustling economy, and vibrant nightlife.
长城 (Chángchéng): This term refers to the Great Wall of China. It is an ancient fortification that stretches across thousands of kilometers and symbolizes China's historical defense system.