Colectivo Tercerunquinto develops work related to the urban, the boundaries between public and private space. By introducing simple signs or gestures – the construction of a concrete slab, displacement of a portion of bitumen on the side of the road, encroachement of grass on a parking, the three artists interrogate public space as the place of possibilities. Their interventions give users an active status with the power to decide on their own environment. For the Hong Kong architecture biennale, the collective intervened in the exhibition spaces. The intervention consisted in constructing a wall which integrated the word 'Anarchitecture' (anarchy + architecture) by omitting certain bricks. Therefore it was as if the word had perforated the wall. Through the wall, the spectator could see the city and its transformations. Thus the spectator was invited to develop his critical outlook on the environment. Formed in 1998, the collective is composed of Julio Castro (b. 1976), Gabriel Cazares (b. 1978), and Rolando Flores (b. 1975).