190 Wu Jiang,vice-president of Shanghai's Tongji University says 80%of Tongji's students come from outside Shanghai "They give us a lot of the cultural diversity.The students here are much more active and innovative, I think,than at local universities" He hopes the hukou system soon relaxes,so migrant kids can stay through senior high school and take the Gaokao in cities where they grow up.That way they have a better chance of reaching their highest potential,which in turn benefits the urban economy. 中国概论