Hi! I am Junjie Chen (陈俊杰), a second-year PhD student in the Department of Computer Science and Technology at Tsinghua University, where I am fortunate to be advised by Prof. Yiqun Liu and Assoc. Prof. Qingyao Ai. My current research focuses on LLM-based Agent, including Agentic RL, LLM/Agent Evaluation and legal AI applications.