It has the world's first island-circling high-speed railway, and a perfect network of roads and expressways, making travel across the island possible in three hours.
Rural tourism in Hainan is also in full swing. Last year, 9.5 million tourists visited the island's rural areas, accounting for 14 percent of visitors－year-on-year growth of 16.8 percent. They brought in more than 2.8 billion yuan.
In the pair format, Lian and Gu will face off, with each having an AlphaGo teammate. Also, five Chinese players will play together, alternating moves, to test AlphaGo's adaptability to their combined style in the team event.
Alongside Ke's individual match, the summit will include pair and team competitions with other high-ranking Chinese professional players like Lian Xiao and Gu Li.
Comparing the two visits, Xi said Hainan has experienced dramatic change. "I felt gratified seeing the new changes in Hainan," he said.
As of 2017, Hainan had 56 international flight routes, and each of its two airports boasted a passenger volume of about 20 million.