Technological highlights of Beijing 2022 included the eco-friendly ice-making system at the National Speed Skating Oval, the Winter Olympics and Paralympics torches that could protect the flame from strong wind and low temperatures, the stunning visual effects at the opening and closing ceremonies of the Games, and the 5G and 8K technologies used for broadcasting.

"All these technologies are treasures of Beijing 2022, and they can further promote the development of scientific and technological innovation," Yi said.

"After Beijing 2022, these technologies will continue to play key roles in the sustainable development of our cities."

A priority for the Beijing Winter Paralympics was creating a complete barrier-free environment. So, barrier-free facilities were provided at venues and travel hubs, and were complemented by related signage and services.

All this infrastructure will also become a legacy of the Games to benefit people with disabilities in China.

"The Winter Paralympics were a great opportunity, and the construction of the barrier-free environment in our country will certainly reach another level. Our society will be more friendly and convenient to people with disabilities," said Tian Chunyan, an NPC deputy and the deputy dean of Beijing General Municipal Engineering Design and Research Institute.

"But we still need to realize there is a lot more work to do to refine the barrier-free environment in our society. We need to listen to the voices and suggestions of people with disabilities when we design all these facilities.

"We also need to increase awareness so more people accept, care for and cherish people with disabilities. Such education should begin in kindergartens and elementary schools. We also need to create more education and job opportunities for them.

"We must try our best to help people with disabilities so they can enjoy a wider space in our society."