Sun in her respirator wedding dress. [Photo/IC]

Soon after the disastrous smog that choked Beijing yesterday, the city's citizens embraced a brand new sunny day bestowed by the wind. But the question haunts days with even the bluest skies: when will the smog return?

Sun Ning, an artist who resides in Beijng, is one of those asking the question. Yesterday, she put on a wedding dress decorated with white respirators and showed up on the streets of Beijing, appealing to the public to take public transportation while we can to combat the smog days.

"The weather in Beijing recently is simply depressing, I felt the urge to do something as an artist. So I put on this wedding dress to appeal to the public – do something you can do for our environment."