"This marathon isn't just about speed; it's about validating reliability for disaster response, elderly care, and logistics," said Liang Liang, deputy director of the management committee of the Beijing's Economic-Technological Development Area.

"Seeing the robots fall and rise again, I felt so excited that they are making the history, which in accordance with every generation of technology development in the past, that is to face the challenge and make it through," said Fan Fan, an audience member.