Sun Wen Si, third year undergraduate law student, at Heilongjiang University in Harbin, China, advocates recycling and reducing litter as the message of the Green Olympics. She hopes to bring yellow canvas bags as an alternative to white plastic bags. Since June 1, 2008, grocery stores and markets in China began to charge customers for plastic bags. “We all know that the plastic bag does not protect the environment and is not biodegradable," says Sun Wen Si. "These yellow bags can be used multiple times." Students can throw the "white rubbish" into the mushroom-shaped litter bins on campus.