Professor Jiawei Zhou was invited to participate the 2nd Sino-German Symposium on Cell Fate and Tumorigenesis: From Models to Human Diseases, which took place in Homburg, Germany in early September of 2019. He gave an informative presentation during the meeting, describing their recent findings on the role of NG2 glia, the fourth type of glial cells in the CNS, in the regulation of brain innate immunity.