China A-share humanoid robot stocks surge in afternoon trading; Mosu Technology hits limit-up

The breadth of the move — limit-ups at Mosu, Zhenghe and MediTech alongside double-digit gains in Zhaomin and a long tail of smaller advancers — points to a sector-wide theme trade rather than stock-specific news, which is typical of concept-driven rallies in the A-share humanoid robot space. The limit-up mechanism itself amplifies this: once a few names lock, attention rotates to laggards, so the composition of gainers matters more than the headline index move. Whether the buying broadens into the smaller names or concentrates back into the limit-up leaders is the open question, and it will say more about conviction than the single-session surge.