Zhang Baojian. Learning experience: He studied in Hebei University of Science and Technology for his undergraduate degree and continued to study chemical engineering in Hebei University of Science and Technology for his master's degree. His research direction was environmental catalysis. During the master period, he published two SCI papers, applied for four national patents, and won the honorary title of university-level excellent graduate student in 2020. Hobbies: basketball, badminton and other sports.