Passengers wait for boarding trains at Hefei South Railway Station in Hefei, east China's Anhui Province, Oct. 7, 2018. A travel peak is seen around China on Sunday, the last day of the week-long National Day holidays. (Xinhua/Liu Junxi)

A staff member instructs passengers to line up at Hefei South Railway Station in Hefei, east China's Anhui Province, Oct. 7, 2018. A travel peak is seen around China on Sunday, the last day of the week-long National Day holidays. (Xinhua/Liu Junxi)

Passengers wait for boarding trains at Hefei South Railway Station in Hefei, east China's Anhui Province, Oct. 7, 2018. A travel peak is seen around China on Sunday, the last day of the week-long National Day holidays. (Xinhua/Liu Junxi)

Passengers check in to board trains at Hefei South Railway Station in Hefei, east China's Anhui Province, Oct. 7, 2018. A travel peak is seen around China on Sunday, the last day of the week-long National Day holidays. (Xinhua/Liu Junxi)