According to Baidu map, the duty-free shop (Sun Moon Plaza Store) located in Guoxing Avenue, qiongshan district, Haikou City, Hainan Province has a duty-free Xianlux counter. Xianlishi is an internationally renowned cosmeceutical brand. With its unique patented technology, it has triggered a complete revolution in the field of vitamin C beauty and has become synonymous with this field. Its products are the most frequently recommended brands by dermatologists.