Tourists wait to enter a duty-free shopping mall in Sanya, Hainan Province, Tuesday. Sales at duty-free shops in Sanya and Haikou increased by 35 percent year-on-year in November after the government raised the tax-free cap in Hainan to 8,000 yuan ($1,280) per person, up from 5,000 yuan, according to official data. Photo: CFP