据披露，2002年5月北京零点调查公司在北京、上海、广州等8市对3404名成年市民进行了中国大陆地区第一次由独立研究机构实施的市民评价市长表现的随机抽样调查。这次调查测试了市民对于各自所在城市市长在施政计划、施政表现、廉政形象和个人风格四个方面因素的了解和欣赏程度 According to the disclosure, in May 2002, Beijing Zero Survey conducted a random sample of 3,404 adult citizens in eight cities in Beijing, Shanghai and Guangzhou for the first time in mainland China conducted by independent research institutions to evaluate the performance of the mayors. The survey tested the public’s understanding and appreciation of the factors that govern the planning of their respective cities, the performance of their administration, the image of an honest and clean government, and personal style