since 2011 and his artwork "the scented air 6000 m" presented at the china pavilion of the 54th venice biennale, yuan uses fog media to pervade the exhibition space or to interfere with people. in his new productions, he has developed a variety of devices and different mechanisms to produce fog, invading public spaces and disrupting the established order ("the stroll, 2012; air strikes around the world, 2013").