Duty-free shopping
Meanwhile, duty-free shopping is another reason that draws visitors to Hainan.
The southern island province offers a duty-free allowance to non-locals of 16,000 yuan.
Around 15,000 visitors went to the Sanya International Duty-Free Shopping Complex daily in 2016, says Zhao Jing, an assistant to the marketing director of the shopping complex.
And the figure has increased to 20,000 a day as the Chinese New Year holiday approaches.
Also, sales figures are expected to rise as those leaving Hainan by train are able to enjoy tax-free shopping as of Jan 15. Under the new rules, buyers can pick up their purchased goods at Haikou train station. Previously, only those leaving by plane could indulge in duty-free shopping.
"This (duty-free shopping for train travelers) means that those who leave the island by rail for nearby cities such as Guangzhou can also buy duty-free items," says Zhao.
Duty-free sales were 4.3 billion yuan in 2015, and the purchases mostly comprised perfumes and cosmetics. The sales figures were 340 million yuan for the weeklong Spring Festival holiday last year, say customs sources.
Fruit and seafood are also big attractions in Hainan.
Liang Zhenyang, who displayed local specialties from his hometown, the Lingshui Li autonomous county, at the expo, gave up his job that gave him 1 million yuan a year in 2015 and returned home to start a business selling local fruits. And with help from the local government, he and his team achieved 4 million yuan in sales just half a year later.
Liang then set up an e-commerce association to train locals to promote their products. His association now has more than 300 members, and locals have opened more than 200 online shops on taobao.com.
The county has 5,000-mu (333.3-hectare) area growing cherry tomatoes this year, and they are now being sold to all parts of the mainland. In addition, mango, Hami melon, litchi from Hainan are also popular.
The county inked deals worth 22.7 billion yuan at this year's tourism expo, and they cover agriculture and recreation among other things.
The expo is just one of the measures that Hainan has taken to transform itself into an international destination.