China is the most populous country in the world with over 1.3 billion people. It has a long history as the location of many dynasties and was ruled by emperors for most of its history. Some of China's most famous cities are Beijing, the capital, Shanghai, the most populous city, and Xi'an, the ancient capital with the Terracotta Army. China is also known for its Great Wall, Forbidden City, Tiananmen Square, Buddhism, Kung Fu movies, pandas, and the Mandarin language.