Who can't draw circles? Even as an artist, his artistic career very possibly began with drawing circles. But later everyone upgrades to drawing eggs, then upgrades to drawing other things... Only one person insisted on just drawing circles. After many years, his circle-drawing technique reached a masterful level. Thus, the "one-stroke spiral painting" like the one shown above was created. You thought he was continuously drawing spirals without lifting his pen, and only after finishing did you see the subtlety: there are pictures in the circles, and circles in the pictures.
All of the above is pure nonsense. The truth is that Singaporean designer Chan Hwee Chong, at the invitation of the German office stationery brand Faber Castell, created an art advertisement for their ballpoint pens. Chan Hwee Chong, using no drafts on blank paper, utilized his delicate sense of touch and drawing skills, combined with a continuous stroke without lifting his pen, and precise control over the thickness of the ink, to create this artwork. A video of his creation process is available later on.