'My friends said it wasn't addictive, now I'm 17 and in rehab'

As he took one last drag on his cigarette, Xiaolei stared solemnly at the rain through the window. "I should never have touched it," whispered the

17-year-old. "I wish I could turn back time."

He was sitting in his room at a voluntary drug rehabilitation center in Beijing. After 15 minutes of silence, visibly lost in his thoughts, he suddenly murmured: "There are too many times I think 'I should have done this' and 'I wish I had done that' when I think of the past."