Staff members of Shuozhou Engineering Section in Shanxi province repair and rectify turnouts, as it prepares for the safe operation of trains during the 40-day Spring Festival travel rush that begins on Feb 2. The employees have been carefully examining every link in the rail equipment to ensure "zero error" and "zero defect" operations. This year's Spring Festival travel season will see an estimated 539 million passenger trips on trains nationwide, up 5 percent year-on-year.