HONG KONG: July 24, 2012 — A little boy reads book at the 25 per-cent off sales section at the 23rd edition of the annual Book Fair  on July 24, 2012 in HONG KONG. (Photo by JUSTIN CHIN)

HONG KONG: July 24, 2012 — Thousands of people visited the 23rd edition of the annual Book Fair  on July 24, 2012 in HONG KONG. (Photo by JUSTIN CHIN)

HONG KONG: July 24, 2012 — Thousands of people visited the 23rd edition of the annual Book Fair to take advantage of book discounts on July 24, 2012 in HONG KONG. (Photo by JUSTIN CHIN)

HONG KONG: July 23, 2012 — A man looks through the booth which sells photo books of young models at the 23rd edition of the annual Book Fair on July 23, 2012 in HONG KONG. The books stired up controversy on the education values on whether it should be sold to the general public at the fair. (Photo by JUSTIN CHIN)

HONG KONG: July 23, 2012 — Books about the Chief Executive C.Y. Leung can be purchased at the 23rd edition of the annual Book Fair on July 23, 2012 in HONG KONG. (Photo by JUSTIN CHIN)