Artist Liu Bolin smiles as he prepares to demonstrate an art installation by blending in with vegetables displayed on the shelves at a supermarket in Beijing November 10, 2011. Liu, also known as the ‘Vanishing Artist’, started practising being “invisible” by means of optical illusions more than six years ago. Picture taken November 10, 2011. REUTERS/China Daily (CHINA – Tags: SOCIETY) CHINA OUT. NO COMMERCIAL OR EDITORIAL SALES IN CHINA – RTR2TZQ6