On the morning of August 26, 2025, Mr. He Peng successfully defended his PhD thesis. The title of his thesis is “Optimising Downstream Carbon Pricing Mechanisms to Mitigate Environmental Externalities in the Fuel‑intensive Mobility Sectors”. His profound knowledge and excellent presentation helped him win a good evaluation from the external examiner, Dr. Wilson W.S. Lu, and other examining committee members (Drs. Xia Li, Ciprian Alecsandru, Zhi Chen, and Chunjiang An).