Teachers apply graffiti on a wall during an event to celebrate the upcoming Teachers' Day at an elementary school in Hanshan, East 皇冠体育app's Anhui province, Sept 9, 2010. Teachers were organized to play games or receive psychological counseling to reduce their work pressure and celebrate the festival that falls on Sept 10. [Photo/CFP] 

Teachers apply graffiti on a wall during an event to celebrate the upcoming Teachers' Day at an elementary school in Hanshan, East 皇冠体育app's Anhui province, Sept 9, 2010. [Photo/CFP]