Core Viewpoint - The recent development of a 3D micro-nano robot by the Chinese Academy of Sciences represents a significant advancement in medical technology, enabling the possibility of non-invasive treatments for diseases such as cancer [1] Group 1: Technology Overview - The micro-nano robot is designed as a pair of flexible "mechanical hands" capable of performing precise tasks such as cell manipulation and particle release [1] - Measuring approximately 40 micrometers, the robot is smaller than a human hair, showcasing its advanced miniaturization [1] - It features a magnetic drive module that allows it to navigate through the micro-world by responding to external magnetic fields, akin to a compass [1] Group 2: Functional Characteristics - The robot exhibits a unique property of closing its "hands" in acidic environments and opening them in alkaline conditions, allowing for automatic operation without human intervention [1] - This adaptability enhances its potential for targeted drug delivery and precise cancer cell targeting without the need for invasive procedures [1] Group 3: Future Implications - The development of this micro-nano robot signifies a step towards realizing the dream of "nano-doctors" that can treat diseases internally, potentially revolutionizing the field of medical treatment [1]