A railway attendant briefs passengers on information about the first China International Import Expo (CIIE) on board the G2 bullet train in east China's Shanghai, Oct. 10, 2018. Railway authorities have launched a campaign on Wednesday to promote the upcoming first CIIE on bullet trains running on the Beijing-Shanghai high-speed railway. (Xinhua/Chen Fei)

Attendants of the G2 bullet train hold sign boards to promote the first China International Import Expo (CIIE) at Hongqiao Railway Station in east China's Shanghai, Oct. 10, 2018. Railway authorities have launched a campaign on Wednesday to promote the upcoming first CIIE on bullet trains running on the Beijing-Shanghai high-speed railway. (Xinhua/Chen Fei)