China has a population of over 1.3 billion people and a GDP of $11.3 trillion, making it the world's second largest economy. It has a single-party communist government and a growing but still developing economy focused on exports, with low labor costs and high growth rates. Culturally, China has a diverse population with the majority practicing Buddhism, Taoism or Chinese folk religions. Environmentally, China faces challenges of water shortage, pollution from coal use, and natural disasters. Technologically, China has made large investments in infrastructure like high-speed rail and supercomputing and has the world's largest number of internet and mobile phone users.