Na Yook-Hyung was one of the most renowned unorthodox martial masters and an arch nemesis of the late Ho Jong-Dae. Though he did not rank among the Four Great Evils, his strength rivalled that of an orthodox sect elder.
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After the fight, Woon-Hwi noted that while he didn't know Na Yook Hyung's ranking 20 years ago, the current Na Yook Hyung is nothing compare to other current top-class warriors. It can be infer that he did not make any significant progress in the last 20 years.