He participated in the restauration works of the Museum of Louvre and his works were exhibited in several famous art galleries, including Stavanger Kunstforening, Norway (1972), the French Institute of Athens, Greece (1983), the gallery Terra Nova, Switzerland (1997).

UNESCO: The Spirit of the Andes

Upstairs, Mr Cai has built a mini rollercoaster in a cavernous gallery, on whose ceiling is painted Mr Cai's history of Belgian art images from the city's famous Ghent altarpiece and iconic works by Magritte and Broodthaers.

ECONOMIST: Firework chaos theory from a latterday Prospero