It seems there is a Korean way to peel and a non-Korean (American, gyopo, expat) way to peel a mandarin orange (귤).  Observe the picture below, on the left and right the Korean method is demonstrated–a sunburst pattern.  In the center is the ordinary way the peel is removed–a cluster of small bits.   Strange but true.  Look for it the next time you eat mandarin oranges (귤) with a group of native Koreans.