The new work of Portable City series "Portable City: Moscow" have been shown at 5th Moscow Biennale of contemporary art, this work is made for the Biennale in particular. Yin's cities are not quite like the real world. They are Yin Xiuzhen’s cities, the manifestation of individual understanding, carrying with them the shadow of public understanding. They are portraits of the city imbued with hers reflections upon the city and the progress of history, as well as she concern about the future. They resemble the real cities only spiritually.