The island of Hainan is located in southern China. Its Chinese name — 海南 — means "south of the sea." Its population is around 9 million, and its landmass is around the size of Belgium.
Many ad campaigns and news outlets have described the island as the "Hawaii of China" or the "Hawaii of the East."
It certainly looks very different to other pollution-ridden Chinese cities like Beijing.
Locals living on the mainland dream of going there.
China used to limit international tourism into the island — now it's relaxing the rules. Earlier this week the government said it would let citizens of 59 countries go there visa-free for a month, extending earlier liberalisation.
It's part of a plan to expose Hainan to foreign investment and tourism, which is limited in other parts of China.
A government document published last week said the plan to develop Hainan is a personal priority for president Xi Jinping.
China has actually been trying to develop Hainan's tourism industry for years, but has struggled. The island attracted around 70 million tourists last year, but only 1.1 million were from other countries.
The island is currently home to multiple luxury hotels, golf courses, and beaches. The Mandarin Oriental, Ritz Carlton, and Shangri-La all have chains on the island.
Here's the view from the Mandarin Oriental's grounds in Sanya.
The island also home to multiple golf courses — one of which was used for the Ladies' PGA tournament last November. Golf is usually regarded unfavourably in China because Mao Zedong, the founding father of the People's Republic of China, dismissed it as a "sport for millionaires."
Earlier this month the government also said it would encourage people to pursue water sports, horse racing, and gambling in the region. This is a big deal: China bans all forms of gambling on its mainland, and only allows some horse racing.
"China's Vegas" is a title currently held by Macau, an autonomous region some 250 miles from Hainan. Macau's Cotai Strip, modelled after the Las Vegas Strip, is home to casino-hotels like The Venetian, Wynn, and Sands.
China has built artificial islands around Hainan as well. One is Phoenix Island, which was designed just for tourism and luxury — a promotional pamphlet even called it "Oriental Dubai."
Another one that's currently being built is Nanhai Pearl Artificial Island, a 266-hectare (1 square mile) large atoll which will take the shape of a yin-yang symbol.
Authorities have already built floodlights down the middle and perimeter of the island — here's what it looks like in the dark.
Authorities also hope to develop cruise tourism around Hainan, which can in turn boost tourism in countries along China's "Belt and Road" trade route.
China has a lot of plans for Hainan beyond tourism. It also wants to transform the island into a hub for artificial intelligence, virtual reality, and electric cars.
This could challenge the economies of nearby port cities like Hong Kong and Singapore.
No concrete plans have been put in place since the government's ambitious plan came out. But investors already seem excited about the island's future potential — stocks whose names simply contained the word "Hainan" recently surged on an otherwise down day in the Chinese market.