SHANGHAI Mayor Yang Xiong met Joan Clos, executive director of UN-Habitat and vice secretary-general of UN on Wednesday.

Yang said that the World Cities Day has been observed for three years as a legacy of Expo 2010 Shanghai and with the help of UN-Habitat, International Exhibitions Bureau and Chinese Ministry of Housing and Urban-Rural Development, Shanghai has been in smooth progress to compile Shanghai Manual, which is meant to offer case references and detailed suggestions to the development of different types of cities.

This manual is expected to be published at this year's UN Housing and Sustainable Urban Development Conference, the mayor said.