Unitree G1 Robot Withdraws From Mount Tai Contest Over Heat Buildup

People's Daily reported that an operator chose to withdraw a Unitree G1 developer edition robot from the first World Robot Mount Tai Climbing Contest in Tai'an, Shandong, after machine overheating created problems mid-climb. An expert stated that the robot overheating stems mainly from the machine body generating heat faster than it can dissipate, rather than high ambient outdoor temperatures. Mount Tai stone steps require continuous lifting of robot weight and stepping point assessments, which forces joint motors to accumulate heat under heavy loads, low rotational speeds, and frequent posture adjustments. Zhang Weimin stated that the competition exposed clear weaknesses in autonomous adaptability across irregular terrain, where robots must gauge changing step heights, depths, friction, and slope while balancing contact forces. Stumbling, retreating, and frequent pauses among several robots demonstrated immature coordination between environmental perception, footing planning, and balance control. Researcher Wang Peng noted that humanoid robots face primary bottlenecks in sustained autonomous operation rather than cognitive processing. Addressing climbing demands requires coordinated development across intelligent models, motion controls, physical actuators, thermal management, and battery controls.