Artworks are displayed at an exhibition titled "Mask-Associations" in Istanbul, Turkey on Feb. 25, 2021. The exhibition "Mask-Associations," organized by the Contemporary Istanbul Foundation in cooperation with the Baksi Foundation based in the eastern Black Sea province of Bayburt, is solely devoted to the use of masks in the course of history. It will run until April 21. (Photo by Osman Orsal/Xinhua) by Zeynep Cermen ISTANBUL, Feb. 27 (Xinhua) -- A black and white picture of the sad face of a child, attached with a "mask" made of all-colored Lego pieces, stunned the audience at an exhibition in Turkey's Istanbul.