Deputy Chief Physician, Department of Colorectal Tumor Surgery, Beijing Cancer Hospital. Graduated from the Medical Department of Beijing Medical University in 1996, obtained a Doctorate in Oncology from Peking University in 2002, and has been engaged in clinical and scientific research in colorectal surgery for over twenty years. Expertise: Surgical and comprehensive treatment of colorectal cancer, recurrent rectal cancer, and adrenal metastases; systematic research on radiofrequency ablation for postoperative local recurrence and radioimmunoguided surgery. Presided over the ongoing in-house fund project of Peking University Clinical Oncology College, "Radiofrequency Ablation for Local Recurrence after Rectal Cancer Surgery." Published over 20 papers as first or co-author, including 5 SCI papers; contributed to multiple monographs on colorectal cancer surgery. Representative papers: 1. Zhao Jun, Gu Jin, Yang Zhi, Li Zhen-fu, Zhang Ji-chang, Zhou Li-xin, Wang Yi, Xu Guang-wei. Relationship among CEA expression in tumor, CEA serum level and radioimmunoguided surgery in colorectal cancer. Chinese Journal of Cancer Research, 2003, 15(4): 269-272. 2. Gu Jin, Zhao Jun, Li Zhen-fu, Yang Zhi, Zhang Ji-chang, Gao Zhi-an, Wang Yi, Xu Guang-wei. Clinical application of radioimmunoguided surgery in colorectal cancer using 125I-labeled carcinoembryonic antigen-specific monoclonal antibody submucosally. Diseases of the Colon & Rectum, 2003, 46(12): 1659-1666. 3. Gu Jin, Zhao Jun, Xue Zhong-qi, Wang Hong-yi, Yang Zhi, Zhang Ji-chang, Gao Zhi-an, He Jing-sheng, Xu Guang-wei. Study on radioimmunoguided surgery with submucosal injection of 125I-labeled anti-CEA monoclonal antibody CL58 in human colorectal cancer. Chinese Journal of General Surgery, 2002, 17(10): 599-601. 4. Gu Jin, Zhao Jun, Li Zhen-fu, Yang Zhi, Zhang Ji-chang, Gao Zhi-an, Wang Yi, Xu Guang-wei. Clinical application of radioimmunoguided surgery in colorectal cancer using 125I-labeled carcinoembryonic antigen-specific monoclonal antibody submucosally. Diseases of the Colon & Rectum, 2004, 46(12): 1659-1666. (Same study as entry 2, re-included in 2004) 5. Zhao Jun, Gu Jin, Peng Yi-fan, Li Ming, Yao Yun-feng, Zhan Tian-cheng. Diagnosis and treatment of adrenal metastases from colorectal cancer. Chinese Journal of Digestive Surgery, 2008, 6(1): 43-45. 6. Gu Jin, Zhao Jun. Clinical pathway for diagnosis and treatment of local recurrence after rectal cancer surgery. Chinese Journal of Practical Surgery, 2011, 31(4): 277-280. Gu Guo-li, Du Chang-zheng, Xue Wei-cheng, Gu Jin, Zhao Jun. Relationship and significance of P27 expression with Ki-67, P170, MLH1, MSH2, MSH6 in colorectal cancer. World Chinese Journal of Digestology, 2012, 20(23): 2157-2161. 7. Zhao Jun, Du Chang-zheng, Sun Yong-sheng, Gu Jin. Patterns and prognosis of locally recurrent rectal cancer following multidisciplinary treatment. World Journal of Gastroenterology, 2012, 18(47): 7015-7020. 8. Zhang Bao-xin, Zhao Jun, Pan Hong-da, Gao Zhao-ya, Chen Peng-ju, Gu Jin. Prognostic factor analysis of 102 elderly patients with colorectal cancer. Journal of Oncology, 2016, 22(5): 365-368.