Rumors of a July launch for a seven-hour GuangZhou-Shanghai high-speed railway line were denied by Guangzhou Railway (Group) Corporation Sunday.

A ticket for the super fast train was alleged to cost 800 yuan ($120) and the train would be taking an alternate route separate from the existing railway lines between the two cities.

The high ticket price and the need for a detour have led Web users to doubt the story at a time when high-speed train stories appear daily in chinese mainland newspapers, the Guangzhou-based New Express reported Sunday.

A Guangzhou Railway (Group) Corporation staff member denied the story Sunday.

“The tracks are under construction for a high-speed train from Guangzhou to Shanghai and the time of completion is not yet known,” Sun Zhang, a transport professor with Tongji University, told the Global Times Sunday.

china now leads the world with a top speed of 520 kilometers an hour and aims to reach 600 kilometers, according to Shen Zhiyun, a locomotive academician with the Chinese Academy of Sciences in Beijing, the Hong Kong-based Wenweipo reported Sunday.

Shen’s statement did not convince Sun Zhang, who said the 520 kilometer-per-hour speed was a plan and needed verification, but he agreed China has become a world leader in high-speed railway technology.

“We have put a lot of elites and money into high-speed railway and we have more than 30 great enterprises building trains,” Sun said. “The urban and rural population flow also demands rapid development of high-speed railway technology.”