If you want to pick one of the most influential districts in the world, we think, the Silicon Valley, locating in the Bay Area of California in the United Sate, with an area of only 500 square kilometers can top the list.

We will show you the entrance to the Silicon Valley through some interesting "doors," from the audio oscillators developed in a small garage, transistors, integrated circuits, personal computers, Internet to social media;from the eight rebellions, the inventors of the integrated circuit and Moore's law, PayPal Mafia, to venture capitalists in Sand Hill road...