China is the country with the largest population in the world. The estimates are around 1.2 billion people. The country is so vast that there are different languages and dialects are spoken. The most famous are Cantonese and Mandarin Chinese. The capital of China is Beijing. Other large cities are Shanghai, Tanjin, Guangzhou, Xian, Guilin, Kunming. Sightseeing in China: the Chinese wall. This year the Olympic Games in China.