Crystal Jade Lotte Seomyeon is a Chinese restaurant on the ninth floor of Lotte Department Store Seomyeon. A chef from China prepares xiaolongbao, seafood jjamppong, and Shanghai-style sweet and sour pork, and the jjamppong contains octopus and a rich broth. During meal times the wait runs about 20 minutes, and delivery and takeout are available. Prices are on the high side.