It is believed that the rise of South Korea's pop music industry is behind the boom, and many patients visit clinics with photos of celebrities, asking surgeons to emulate nose Angle or eyes.

Changing neither the length of overlapping gap nor the Angle of turning corner can assure the rise in shielding effectiveness, rather the specific changing trend is related to frequency range.

The research and analysis of these concepts in theoretic angle may give rise to some new instructions for the research of attacks and countermeasures.