Train tickets for Valentine's Day – Feb 14 – are predicted to be the hardest-to-get based on statistics, according to Beijing-based Internet technology company Qihu 360.

Valentine's Day next year is a Saturday, five days before Spring Festival which falls on Feb 19. Many people are expected to extend their vacation from seven days to 12 while only taking three extra days off, making Feb 14 travel the most requested.

Based on statistics for the first 10 days of Spring Festival ticket sales through the 360 browser orders hit 7,854,000.

Tickets issued in Guangdong province made up more than 60 percent of sales, and its capital, Guangzhou, has the most people buying.

It is the peak time to return home for migrant workers, say analysts from the browser. Demand for tickets will surge closer to Spring Festival in first-tier cities such as Beijing and Shanghai, where millions of migrant people work and live.

Hunan, Sichuan and Hubei have exported the most migrant workers and more than 1.3 million tickets to Hunan have already been booked.

Tickets for Sichuan and Chongqing are already sold out.