"Of all the projects concerned, the solution to traffic congestion is prioritized," Qiu said. "The winner of the bid needs to advise us on how to modify the present road network and minimize traffic jams."

The official said planning for better accessibility of underground spaces including optimized walking and riding routes and for charging piles will also be covered.

Tianhe CBD has three mega underground spaces, not to mention a large number of spaces under its skyscrapers as well as high-rise residential buildings, leaving much space to be developed for parking as well as for business outlets.

"With the world's advanced planning ideas, we aim to make Tianhe CBD more convenient, dynamic and amazing, but with the least disturbance by avoiding massive demolitions or construction," Qiu said.

The administrative committee will also seek public advice, design works and creative ideas globally to the same end.

Being the financial and headquarters center of Guangzhou, Tianhe CBD is home to 140 Fortune Global 500 companies that have launched 184 investment projects there. It is also home to headquarters of over 100 companies.

Canton Place is popular among expats in Guangzhou, for its good food and fashion brands. [Photo provided to chinadaily.com.cn]

The CBD realized GDP of 270 billion yuan in 2016, up 9 percent from a year ago, official statistics indicate.