Age is personal privacy and cannot be disclosed. Yu Jun, Department of Neurosurgery, Second Affiliated Hospital of Zhejiang University School of Medicine. His age is personal privacy and cannot be disclosed. He specializes in the diagnosis and treatment of vascular diseases of the nervous system, surgical treatment of intracranial aneurysms, vascular malformations, carotid artery stenosis, and moyamoya disease. He graduated from Zhejiang University has rich clinical experience in the diagnosis and treatment of neurosurgery-related diseases. In 2013, I went to the United States for further study and gained a deeper understanding of the treatment of various diseases.