"The new operation plan prioritizes the market's demands and diversifies the services provided for ordinary days and peak periods," Zhu said. "The daily transport capacity of high-speed lines would be increased by 70,000 travelers, 3.8 percent higher than in the past."

The Beijing-Shanghai high-speed railway, the busiest route in China, has transported 220 million passengers in the past three years, largely due to the high-speed service.

The country's railways registered 199.7 million passenger trips in May, 20 percent more than in April, marking the biggest monthly rise this year, figures from China Railway Corp showed.

All 18 branches of the company reported growth in passenger traffic, with the Nanning branch in the Guangxi Zhuang autonomous region ranking the highest with a rise of 46.8 percent.

New Lines

Construction of 14 new railway lines has begun, China Railway Corp announced on Monday.

The new lines have a total length of 3,712 km, and will require an overall investment of 327 billion yuan ($52.7 billion), the company said.

The company said the priority of this year's rail construction is new lines in the nation's central and western regions.

In addition, to meet the demands of a booming e-commerce sector in China, CRC will operate six one-stop cargo trains between Beijing, Shanghai, Guangzhou and Shenzhen to move goods more quickly.

China's commercial carrier industry has become the world's second-largest, delivering 9.2 billion packages in 2013, up more than 60 percent year-on-year The new service was to start on Tuesday.