In the morning of June 14, 2023, Ms. Huifang Bi successfully passed her PhD oral comprehensive exam. The title of her exam report is “Recent development in the use of surface washing agents for shoreline cleanup after oil spills”. Her profound knowledge and excellent presentation helped her win a good evaluation from the external examiner, Dr. Nhat Truong Nguyen, and other examining committee members (Drs. Fuzhan Nasiri, Zhi Chen, Catherine Mulligan, and Chunjiang An).