Vehicles move slowly at an expressway checkpoint in Beijing on Wednesday. Photo: VCG

A passenger carrying her kid walks at Beijing Railway Station on Wednesday. Photo: VCG

Passengers leave a platform in Yantai Railway Station in Yantai, Northeast China’s Shandong province, on Wednesday. Photo: VCG

Crowds of passengers check in at Nantong Railway Station in Nantong, East China’s Jiangsu province, on Wednesday. Photo: VCG

Crowds leave a platform in Shenzhenbei Railway Station in Shenzhen, South China’s Guangdong province, on Wednesday. Photo: VCG

Police guide the passengers in Nanjing Railway Station on Wednesday in Nanjing, East China’s Jiangsu province. Photo: VCG

Parents wait in lines with their kids at the entrance of Wuhan Railway Station in Wuhan, Central China’s Hubei province, on Wednesday. Photo: VCG

Travelers line up to board a train on Wednesday in Yantai Railway Station in Yantai, Northeast China’s Shandong province. Photo: VCG

Passengers throng Nanchang Railway Station in Nanchang, Southeast China’s Jiangxi province, on Wednesday. Photo: VCG