China cashes in on World Cup fever
13 June 2014 Last updated at 05:45 BST
With the World Cup under way, Chinese football fans are being offered a crafty - if unethical - solution to the problem of watching games in the middle of the night: fake sick notes.
Fraudulent doctors' letters are available for as little as $16 (£9) and are reportedly selling well.
And they are not the only way in which Chinese entrepreneurs are cashing in, producing a range of World Cup-related items from Brazil's answer to the Vuvuzela to your very own World Cup trophy.
John Sudworth reports from Shanghai.