摘要
WHEN new films are released, Li Heng, a col- lege student in Beijing, usually goes to a ped- dler to buy DVDs at the gate of his college. And usually, he can get the film DVDs at the prices he expected, at about 10 yuan （$1.59） apiece.
WHEN new films are released, Li Heng, a col- lege student in Beijing, usually goes to a ped- dler to buy DVDs at the gate of his college. And usually, he can get the film DVDs at the prices he expected, at about 10 yuan （$1.59） apiece.
