Looks, though, can be deceiving: the depth in the two-dimensional wall drawings gives an illusion of 3D. Ji Hyang Ryu said it took her about two weeks — and two litres of black paint — to turn the ...

Looks, though, can be deceiving: the depth in the two-dimensional wall drawings gives an ... two weeks — and two litres of black paint — to turn the white walls into an artistic illusion.