After the games 3 million cars are allowed back on the roads and all the businesses that had been poluting the skys over china will start up again.
Thats sure to have some impact, just what is uncertain.
"China, the world's No. 4 economy, may have lost as much as 3% of its estimated 24.6 trillion-yuan ($4.2 trillion) gross domestic product by shutting down factories in Beijing and surrounding areas for two months, Mr Tao said.
Some factories, including Beijing Shougang, the nation's fourth-biggest steelmaker, were evicted from the capital.
The affected regions generate about 26% of China's economic output, so the world's fastest-growing major economy will slow during the next two months, Goldman Sachs says."
We are talking major industry offline, and coming back on.