China's railways have sped passengers to their destinations 253 million times since this year's "chunyun" began 38 days ago, China Railway Corporation (CRC) said Sunday. On Saturday, 7.73 million journeys were made on Chinese railways, and 7.5 million are expected for Sunday. The corporation said it would run 487 extra trains on Sunday to cope. China's transport system is put to the test during chunyun, the 40-day travel period around the Spring Festival which started on Jan. 16 this year. Although chunyun is nearing its end, the number of daily trips will remain high until Feb. 24 as students and workers get back to their daily toil. Migrant workers usually go to their hometowns for family reunions at New Year and return to the cities following the festivities. Ticket shortages are expected only on a couple of crowded lines, according to the CRC. About 3.62 billion trips are expected to be made on all modes of transportation during the 40-day period, according to official data.