Haihan Liu is an undergraduate student in the School of Statistics and Data Science at Shanghai University of Finance and Economics. She joined Professor Fan Zhou’s research group in 2025. During her internships at internet and financial companies, she participated in the development of large language model systems for financial advisory services and big-data analytics. With a background in statistics, machine learning, data mining, and large language model development, she is particularly interesin modelted fine-tuning, retrieval-augmented generation, prompt engineering.