Blue Sky Light can bring the “clear sky” home. It has multiple advantages: It helps improve mental health and mood, optimize sleep quality, create a natural ambience, and enhance productivity and comfort. Meanwhile, it features high energy efficiency and sustainable design, with versatile application scenarios. It can be used in reading rooms, bedrooms, living rooms, baby rooms, basements, classrooms, offices, subways, hypermarkets, retail stores, hospitals and other scenarios. By simulating the light of a clear sky and based on the response of the human hypothalamus to light, it regulates the biological clock and is beneficial to both physical and mental health and emotions.