Much more than language.
A few facts:
China have more than 5000 years fantastic history, and some brilliant periods. created resplendent culture and history, left so many great heritages.
China has become the world’s second-largest economy behind the United States in 2010.
China is the world's largest consuming market for automobile, cement, cosmetics, foods, steels and many other products.
China has more than 100 dialects, Mandarin is the official spoken language.
China has 1.2 billion population, there are over 160 cities in China with population over one million.
In 20 years, China's cities will have added 350 million people more than the entire population of the United States today. By 2025, China will have 221 cities with one million–plus inhabitants—compared with 35 cities of this size in Europe today (The McKinsey Global Institute report).