I was selected by the CSC 2022 International Cooperation Training Program for Innovative Talents and was sent to the International Institute for Carbon-Neutral Energy Research（I²CNER）at Kyushu University, Japan, for a 3-month joint training program.

Kyushu University is a leading research university located in Fukuoka City, Japan. It is the highest regional university in Kyushu and holds an important academic position in Japan and the world. Kyushu University has a tradition of good academic culture, rigorous governance, emphasis on internship and practice for students, and faculty members who value inspiring teaching. My joint training at Kyushu University was conducted in the laboratory of Professor Tatsuki Ishihara, Director of I²CNER. Professor Ishihara is mainly engaged in research in the fields of functional inorganic materials, fuel cells, and environmental catalysts.

I had experienced a lot of difficulties before I left because it was very difficult to get a visa to Japan due to the epidemic, and I postponed my study in Japan until February 27, 2003, while waiting for my certificate of eligibility.

I had already visited Prof. Ishihara's group twice before for short-term academic exchanges, so I was relatively familiar with it, and I also had two brothers who were postdoctoral fellows and doctoral students there, so I could say that I was familiar with the trip without any tension.

Professor Ishihara's laboratory and his institute have many large facilities for materials preparation and characterization. The purpose of my trip was to use the material characterization equipment and learn from their experience in material preparation and characterization, and to combine my experimental data and experience gained during my master's degree program in China to improve the characterization and analysis of my research on CO2 to methanol catalyst. To further improve my research topic. Therefore, during my joint training, I learned and utilized various instruments including X-ray diffraction, scanning electron microscopy, and X-ray photoelectron spectroscopy to characterize my catalyst more comprehensively and to supplement the gaps in my experimental part. I have also used these data to refine my English journal paper in progress and to start the submission process of the paper. Since my study abroad has been delayed and I am close to graduation, another major task for me during my joint training is the writing of my master's thesis. This work took up a large part of my time in Japan.

In addition, I studied the conductivity measurement of solid electrolytes in Prof. Ishihara's lab to meet the requirements of my future work as a Ph.D. I briefly studied the basic principles and methods of electrolyte conductivity measurement. I learned the use of material preparation equipment and the methods of DC-AC conductivity measurement and data analysis. Learned from scratch and completed exercises on preparation, molding, cutting, electrode fabrication, and conductivity measurement of solid electrolyte materials. And participated in the English group meeting report of the subject group.

It was also a rare opportunity to be able to spend some time in Japan, and I used my free time to travel to some famous cities and sights in Japan, such as Tokyo, Hakone, Kobe, Kyoto, Nara, etc. Experience Japanese cuisine and history and culture to the fullest.

During this joint training period, I benefited a lot from the study and research tasks, and the study in a first-class laboratory abroad also helped me to improve my English and academic communication skills. It will have a positive and far-reaching impact on my future study and research. I am grateful for the financial support from the China Scholarship Council, and I am also grateful to Prof. Ishihara and my Chinese supervisor Prof. Limin Guo for training me.