Liangzi Erhao

Liangzi Erhao (量子二号 / "Quantum No. 2") is a humanoid robot body designed and released by Independent Variable Robotics (自变量机器人), a Chinese embodied-intelligence startup. It was developed alongside its sibling model Liangzi Yihao (量子一号), with both units built from the ground up on a full-stack self-research approach: the company redefined the hardware architecture from model-algorithm and data-driven requirements, achieving in-house development of core components including robotic arms, joint modules, power drivers, and main controllers with deep algorithmic adaptation . The two robots are described as high-performance bodies intended to enable scaled manufacturing and commercial deployment of embodied-intelligence systems . By mid-2026, Independent Variable Robotics had moved Liangzi Erhao into mass production , part of a rapid funding sequence that pushed the company's valuation past 20 billion yuan.