In a lead article in Xinhua, the following achievements are emphasised.

1. Intelligent vehicles

A 5G-enabled intelligent vehicle networking system covering 1 million square meters. Thanks to the integration of 5G technologies and the Beidou Satellite Navigation System, the unmanned vehicles can achieve continuous, high-precision positioning of cars and ferries to within 10 centimeters (level 4 autonomy),

2. Digital technologies

AI and 5G were widely employed to construct venues, e. g., a detailed high-precision 3D map of the Bird’s Nest and the Shougang ski jump platform. Augmented reality navigation provided an immersive virtual-real fusion effect with accurate positioning without delays,

for instance for virtual interactions with journalists at remote news center through holographic communication technologies

3. Robotics

AI-powered robots cleaned and disinfected venues, AI sign language “anchors” allowed people with impaired hearing to enjoy the Games, and robot chefs cook a wide variety of tasty meals. After orders were placed, robots took elevators and navigated their way from restaurants to athletes’ rooms. They also patrolled competition venues as security guards

4. Improved broadcasting services

Asset-heavy and expensive trucks and a large team of production directors were replaced by on-site reporters using a small camera or smartphone equipped with a stabilizer to livestream a sports event, thanks to 5G and cloud technologies.

Xinhua, February 16, 2022

I have added some videos on YouTube in case you are interested in more details

https://www.youtube.com/watch?v=i34AA4FBtBI a feature from France

https://www.youtube.com/watch?v=NWYprQFYIv8 high-speed 5G train connection

https://www.youtube.com/watch?v=EE-2SvKYdFY robotic cooking and serving

Stadium screen of 10600 square meters composed of 42,000 LEDs with a resolution of 8K