major exhibitions in which he has participated in recent years include the collateral event "voice of the unseen" of the 55th venice biennale, the thematic exhibition at the china pavilion of the 54th venice biennale, the copenhagen art festival, the 6th prague contemporary art festival, the inaugural beijing 798 biennale, the 4th china songzhuang culture and art festival and the 4th chengdu biennale.