In the morning of July 9, 2021, Ms. Qi Feng successfully passed her PhD oral comprehensive exam. The title of her exam report is “The transportation and aging behaviors of microplastics in the coastal environment”. Her profound knowledge and excellent presentation helped her win a good evaluation from the external examiner, Dr. Xia Li, and other examining committee members (Drs. S. Samuel Li, Catherine Mulligan, Zhi Chen, and Chunjiang An).