(Jiashen leap February Eve), April 18, 2004, beginning at midnight, the national railway formal implementation of the fifth large-scale speed. In 0:00 am on April 18, 2004 Fifth Large Scale of Adjustment implemented. Adjustment on Speed ​​this part of the lot line of the Grand Trunk basically reached a speed of 200 kilometers per hour; speed network total mileage of over 16.5 thousand kilometers; national railway passenger trains average travel speed of 65.7 kilometers per hour.