Passengers wait to board their trains at Shanghai Hongqiao Railway Station on Wednesday, the first day of the May Day holiday. On that day, railways across the country carried 20.693 million passengers, a record high for a single day. Photo: China News Service

Hangzhou East Railway Station in Zhejiang province is packed on the first day of the May Day on Wednesday. Photo: VCG

Long queues form at Wuchang Railway Station in Wuhan, Hubei province, on Wednesday. As travel demand continues to return post-pandemic, railway stations are experiencing a flood of passengers. Photo: VCG

Passengers gather in Beijing South Railway Station in the capital on Tuesday. Authorities expect 11.6 million passengers to pass through the station over the holiday, an increase of 3.1%, year-on-year. Photo: VCG

Passengers wait for their trains at Guangzhou South Railway Station in South China's Guangdong province on Tuesday. Photo: China News Service

Tourists take in the scenery Wednesday at the Fairy Lake scenic spot in Xinyu, East China's Jiangxi province. Photo: VCG

Tourists flock to the Palace Museum in Beijing on Tuesday. According to the site’s official website, pre-booked tickets for the May Day holiday have sold out. Photo: IC Photo

Tourists swarm the ancient city of Pingyao in Pingyao, North China’s Shanxi Province, on Wednesday. Photo: VCG