Tianjian Liu is an undergraduate at Sun Yat-sen University and serves as a research assistant at HKUST (Guangzhou) under the supervision of Prof. Dr. Xin Tong, focusing on Human-AI Interaction and Natural Language Processing. Previously, Tianjian participated in projects in conversational agents and social computing, supervised by Zhenhui Peng in Sun Yat-sen university. Currently, he is motivated to design personalized agents for long-term interactions, aiming to providing support for users' mental health and work productivity.