China's railway network saw about 592 million passenger trips during the summer travel peak, which ran from July 1 to August 31, data from China Railway Corporation showed Friday.
The volume marked a year-on-year increase of 9.6 percent, with an average of 9.55 million trips made each day.
Traffic on China's high-speed rail lines saw fast growth, with an average of 639,000 passengers travelling on the line linking Beijing and Guangzhou each day.
In China, summer holidays for students usually last from early July to the end of August, driving up passenger flows.
As of the end of 2016, China had a 124,000-km railway network, featuring the world's largest high-speed rail network of more than 22,000 km.
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