Kelly Mok first saw Hong Kong’s celebrity tutors blown-up on billboards above the highway and plastered alongside buses. “Are they tutors?” she wondered. They looked more like South Korean pop stars, with their hair cut at a half-dozen lengths and brushed in a half-dozen directions.

Source: http://world.time.com/2013/12/30/rich-and-famous-why-hong-kongs-private-tutors-are-millionaire-idols/