The number of tourists booking trips during the holiday is already double that of this month's Tomb Sweeping Festival. Yang Feiyue discerns trends and deals from data compiled by one of the country's major travel agencies.

May Day holiday travel is expected to be more than twice that of the recent April 4-6 Tomb Sweeping Day. Floods of visitors will land in Japan and South Korea, for example, because of favorable visa policies and a stronger yuan, a report by major Chinese online travel company Ctrip says.

"Tourists are more likely to travel in May because of warmer weather," Ctrip's tourism department marketing director Dai Yu says.