Under the influence of new stream A, supermarket performance negative growth of 14 to 16% from September began to maintain growth momentum in the mass market in South Korea infants and young children's clothing market performance from the end of October suddenly suffered Waterloo. Compared with the performance in early October, which maintained double-digit growth rate, after October 20, the performance suddenly started to decline. The industry believes that this phenomenon is due to a sudden cooling before the weather returned to normal levels, and the impact of a new flow makes passenger traffic reduced. In particular, during the last week of October, the spread of the new A-type flow even saw double-digit negative growth in performance. Analysis of the performance of infant and young children's clothing at major supermarkets in the last week of October revealed that Lotte Mart was easy to buy and HomePlus recorded a negative growth of 14-16% over the same period of last year. A supermarkets buyer said: "The performance before mid-October kept a steady growth compared with the same period of last year, but the performance declined sharply after mid-term, and we had to take the proliferation of the new A-type flow" "The only portion of the food that keeps growing is also having negative growth from two weeks ago, and we judge that consumers are reducing their access to the supermarket." In contrast, the performance of department stores and department store online mall has not been greatly affected. Despite a slight negative growth in the performance of baby clothing for Lotte Department Store in the last week of October, the overall performance in October increased by 7.6% over the same period of last year. The performance of the New World Department Store rose 8.5% in the last week of the year before, and the overall performance in October increased by 20%. Rakuten Shangcheng posted a 40% increase in performance in October. The last week also hit a 30% growth rate.