Police : A 13-year-old boy joins a gang and is given free ketamine . Ketamine is the top drug of choice among young people in Hong Kong . Drug use among those under 21 has jumped 57 percent in the last five years . By stepping up policing , say parks and public places hot spots for drug use . Hong Kong has one drug rehab center for youth , located on a remote former pig farm .
Police : Ketamine is the top drug of choice among young people in Hong Kong . Drug use among those under 21 has jumped 57 percent in the last five years . By stepping up policing , say parks and public places hot spots for drug use . Hong Kong has one drug rehab center for youth , located on a remote former pig farm .