Despite the 2008 Beijing Olympics, official data show that tourism to China decreased by 2% last year. From BBC News:

The number of foreign tourists to Beijing in August fell far short of the government’s estimated 500,000.

[…]Tougher visa requirements ahead of the Games and a 100,000-strong anti-terror force may have dampened demand.

The 2008 financial crisis and natural disasters may have also played a role in the tourism drop, according to official media.