Smoggy memories (1/7)

"The longest distance in the world is not between life and death, but between you and me when I hold your hand in the street but cannot see your face," is a joke that circulated online.

Sadly, it's not a joke anymore. With smog constantly shrouding many cities in China, chances are that you may not even remember the good old days when the sky was much clearer and the air fresher.