In the study of cities , the study of beijing made by the students from the architecture research center of beijing university and the gsd , harvard university directed by zhang yonghe , provided us a unique approach to knowing the city , the historic evolution of main layout , the visual reading of city nodes and ring roads and the possibility of developing city density 在城市研究中,由張永和指導(dǎo)的北大建筑學(xué)研究中心和哈佛大學(xué)設(shè)計(jì)學(xué)院的學(xué)生們所做的北京城市研究,分別從主要建置的歷史演變、城市節(jié)點(diǎn)與環(huán)線的視覺(jué)性閱讀、城市密度發(fā)展的可能性等方面,為我們提供了城市研究的獨(dú)特方法。