Nucleic acid within 48 hours. KKMALL, an international fashion boutique shopping center, is located in the core of Caiwuwei Financial Center in Luohu District, Shenzhen. There are people from various countries in the shopping mall, and the personnel are complicated. Every time you enter the country, you need to hold a nucleic acid test report within 48 hours. The shopping mall is very clean and there are many kinds of goods.