Chao Zhang is an Associate Researcher at the School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, China. He completed his Ph.D. at the same university in 2014. His research interests include the function and regulatory role of exosomes in tumor metastasis, through research on the mechanisms related to tumor exosomes, finding new drug targets, establishing new screening models, discovering effective substances of traditional Chinese medicine, and research on exosome-based drug carriers.