Tourists play in the sea at the tourist resort island of Wuzhizhou, about 50km (32 miles) from Sanya, in south China's Hainan Island province November 27, 2007. China's domestic tourism is booming as evidenced by an estimated 150 million people who took to the road, rail and air during this year's "golden week" Labour Day holiday in May. China's government is considering changing the country's three holiday weeks and introduce long weekends to cope with traveller congestion. REUTERS/Nir Elias (CHINA)