This episode explores the rising prevalence of spring allergies in Beijing and the phenomenon of "floodlighting" in modern dating. Against the backdrop of the warmer weather and blooming flowers, the hosts and guests discuss the surprisingly significant role trees, particularly the widespread cypress trees, play in triggering allergies. More significantly, the discussion delves into the medical explanation of allergies, highlighting the immune system's overreaction to harmless substances like pollen. For instance, the panel shares personal experiences with allergies and discusses how lifestyle factors, such as diet and overly clean living environments, can contribute to their development. The conversation then pivots to the dating trend of "floodlighting," where individuals overshare intensely personal details early in a relationship, potentially creating a false sense of intimacy and overwhelming the other person. The hosts and guests analyze the potential pitfalls of this trend, emphasizing the importance of balanced vulnerability and healthy relationship pacing. In conclusion, this episode offers insights into both the environmental and social aspects of modern life, highlighting the unexpected consequences of urban planning choices and the complexities of navigating modern relationships.