The rail operator also noted that it plans to put into operation 3,000 kilometers of new lines.
The 915-kilometer line linking Chengdu and Kunming will cut travel time between the two cities to 7.5 hours.
Support will be extended to transportation operators to encourage them to provide various services, including customized transport options and e-tickets.
From December 8 to 12, more than 638,000 passengers left Shanghai by train.
Offers are due by the end of January 2023.
China Railway operated 4,468 passenger trains on Wednesday, carrying 2.64 million passengers.
It is estimated that the global cruise industry will welcome a full recovery no later than 2023.
The Chinese market will be bigger than those of Singapore and India combined.
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