Although he has been engaged in clinical neurosurgery and brain science research all his life, in Zhao Jizong's view, human beings are far from unveiling the mystery of the brain. Zhao Jizong, academician of the Chinese Academy of Sciences, neurosurgeon, director of the National Clinical Medical Research Center for Neurological Diseases, dean of the School of Neurosurgery of Capital Medical University, professor, doctoral supervisor and chief physician of the Department of Neurosurgery of Beijing Tiantan Hospital affiliated to Capital Medical University. Although Zhao Jizong had a lot of responsibilities, he still insisted on going out of the clinic and performing surgery on time. When I met Zhao Jizong, he had just finished his outpatient work and returned to the office. Later, he had to go to the operating room for surgery. In the middle, he took time to arrange a joint interview with the Xinhuanet Technology Channel and the "Science and Technology China" platform of the China Association for Science and Technology. "I have two and a half days of outpatient service every week, and the rest of the time I schedule surgery or rounds." Zhao Jizong said, "Generally, the schedule can be adjusted, and whichever is urgent can be handled first. But the clinical work is routine. I go out for half a day every Monday and Wednesday morning, which is fixed and cannot be changed. Because patients make appointments in advance, many patients come from other places to see a doctor. It is not easy to stop the doctor easily, which is not good."? The picture shows Zhao Jizong, academician of the Chinese Academy of Sciences and chief physician of neurosurgery of Beijing Tiantan Hospital, stepping into the era of online neurosurgery in outpatient visits. Zhao Jizong is a milestone figure in promoting the development of neurosurgery in China and making it internationalized. According to Zhao Jizong, neurosurgery in the world has a history of 100 years, and has gone through three development stages: classic neurosurgery, micro neurosurgery and minimally invasive neurosurgery. At present, with the rapid development of brain science research, the emergence and rapid iteration of digital medical imaging and composite surgery technology, neurosurgery is about to enter the fourth stage - network neurosurgery. "The human brain is not only an organ that regulates various functions of the body, but also the material basis of high-level neural activities such as consciousness, spirit, language, learning, memory and intelligence. When we do something, such as speaking, not only the language functional area of the brain is working, but also it is connected with the visual, auditory and other functional areas, which is called the brain network. The human brain has 800-1000 trillion neurons (nerve cells) And 100 trillion connections. In the past decade, more and more cognitive neuroscientists have expanded their focus from isolated 'brain regions' to a wider range of' brain networks'. Using various brain imaging, neuroelectrophysiology and other technologies, we can establish a connection map (brain network) between brain regions and neurons in the human brain at macro, meso and micro scales, so that the connections between different parts of the brain can be revealed and how the brain works. The progress of brain network research promotes neurosurgery to the stage of network neurosurgery. " Zhao Jizong explained. The development of network neurosurgery provides a safer and more reliable method for the treatment of refractory nervous system diseases, which makes the surgery more delicate and improves the surgical effect from a clinical perspective. At the same time, online neurosurgery has also opened a door for neurosurgery to brain science research, such as epilepsy, Alzheimer's disease, Parkinson's disease, depression, etc. The pathogenesis of these diseases is still unclear