I. Introduction
With the development of wireless sensing for Artificial Intelligence and Internet of Things (AIoT), WiFi-based intelligent human detection technology has attracted increasing attention recently. Human are progressively using the perception of changes in their surrounding environment to achieve personalized services, such as activity recognition [1], [2], [3], [4], gesture recognition [5], [6], breath detection [7], indoor positioning [8], human body detection [9], etc. These applications have transformed people’s lifestyles, enhancing the overall quality of life. Among them, human behavior recognition, as a hot research topic, has consistently attracted the attention of researchers and holds broad application prospects in areas, such as smart homes, monitoring of the elderly and patients, and public safety.