I am an Assistant Professor in Department of Statistics and Actuarial Science at The University of Hong Kong, where I direct the Visual AI Lab. My research interests lie in computer vision, machine learning, and artificial intelligence. My current research focuses on open-world learning, 3D vision, generative AI, foundation models and their relevant fields. The overarching goal of my research is to achieve principled and comprehensive visual understanding, close the intelligence gap between machines and humans, and build reliable AI systems for open-world use.