Don’t mistakenly regard this tiny wriggler as a blood worm – it is a revolutionary microrobot, crafted from a patient’s own blood cells and finer than a human hair, designed to navigate through the brain’s complex neural labyrinth with astonishing precision. Far from a sci-fi creature, CUHK’s innovative microrobots don’t just move – they slither, swim and crawl under magnetic control, hunting down cancer cells like guided missiles. Remotely steered by external magnetic fields, they deliver targeted therapy to brain tumours once considered untreatable, offering new hope where conventional methods fall short.