In the Rough Guide to Korea, my guru Norbert calls Yakcheonsa one of Jeju’s most magical experiences. The best time to arrive, he writes, is 7 pm on a summer evening, when “worshipping locals chant under the interior glow with their backs to the sunset.” So I hiked a staircase at the end of Jungmun Beach, grabbed a cab from the Hyatt hotel, and missione ...