Railway workers shoulder the responsibility of keeping the increasing number of China-Europe Railway Express trains safe and on time. (Compiled by Liang Xuechen, photos: CFP)

In the early hours on Wednesday, more than 60 workers carried out rail grinding and replacement at the Tuanjie Village Central Railway Station of Southwest China's Chongqing.

Workers grind the rails as part of railway maintenance on Wednesday at Tuanjie Village Central Railway Station of Southwest China's Chongqing.

Workers grind the rails as part of railway maintenance on Wednesday at Tuanjie Village Central Railway Station of Southwest China's Chongqing.

The China-Europe Railway Express (Chongqing), launched in March 2011, has witnessed the transportation of over 1,000 types of goods ranging from smart terminals and whole vehicles to auto parts and medicines, with a total value exceeding 400 billion yuan (about 60 billion US dollars).