China and the U.S. are two societies with very different attitudes towards opinion and criticism. In China, I am constantly under surveillance. Even my slightest, most innocuous move can - and often is - censored by Chinese authorities.
In the '80s, you couldn't walk in the neighborhood without looking back to see if anyone was following you. You had your key in your hand before you got to your apartment and you'd rush in so you didn't have to stop.
The 'Bird's Nest' National Stadium, which I helped to conceive, is designed to embody the Olympic spirit of 'fair competition.' It tells people that freedom is possible but needs fairness, courage and strength.