Large numbers of travelers move slowly through Nanjing Railway Station in Jiangsu province on Oct 7, 2018. (SU YANG / FOR CHINA DAILY)

BEIJING –  China is expected to see 40 million domestic trips during the four-day holiday for the Mid-Autumn Festival, also known as the Moon Festival, China State Railway Group said Saturday.

The railway passenger flow is expected to recover to the level of last year, China State Railway Group said

Passenger trips are expected to peak on Sunday, the first day of the three-day holiday for the festival, said the company, noting that 11 million trips are estimated on that day.

READ MORE: China's Spring Festival travel rush begins

The railway passenger flow is expected to recover to the level of last year, the company said, citing bookings already made on 12306.cn, China's official railway ticket reservation website.

The Mid-Autumn Festival which falls on Sept 21 this year, is a traditional festival symbolizing family reunions.