As a student aspired to become a physicist in the future, this exchange has provided a precious opportunity for me to participate in one of the largest underground neutrino experiment in the world, the SNO+ experiment at the University of Oxford. I was responsible for data analysis and reconstruction during the three months of exchange. Working with my supervisor and DPhil students around me has broadened my horizon on the frontier developments in the field of underground neutrinos experiments and the physics behind them. The experience of working in a world-scaled experiment has also taught me the importance of effective communication with others and at the same time to be independent in learning. Lastly, I would like to express my gratitude to the donors of the Fung scholarship. This exchange could not be as fruitful as it was without the generous support of the Victor and William Fung Foundation.