Shenzhen, once a small fishing village and the testing ground for bold economic experiments, has grown into a showcase for China’s opening up. Today, this metropolis is developing into a city embodying the country's future. Thirty years ago, it had only 300,000 people. Now it is a city of more than 10 million and home to some of the world’s largest companies, with the fourth largest economic output in China. Its miracle has been unprecedented in human history.