If you are going to wear mask to visit Beijing, then you'd better not take it off during your stay, cos your breath may be a potential threaten to Beijing air. Thanks for your cooperation~

With the opening ceremony of Beijing Olympics is just a few days away, the air quality is much improved, but we cannot ignore that in some of the recent days the major Olympic venues of the whole city

Just a common day in New York city, the Grand Central Station, one of the world's largest train stations, came to a sudden halt with 207 agents all froze at the exact same second for 5 minutes. I have