'Your papers, please' must never be heard in America
Independent voices from the TWT Communities
When it was added to the calendar nine years ago, the Chinese Grand Prix was supposed to give Formula One a path to a vibrant new market that offered access to millions of racing fans and big name sponsors.
A Chinese state media report says security for the upcoming Shanghai Masters is being tightened after an online death threat against Roger Federer.
"There were some tough years, but it's been getting better ever since," the circuit's sales manager Yang Yibin told local media.