Beginners need a lot of practice to master fingering as a motor skill. However, in the post-lesson practice sessions, beginners often fail to provide internal feedback due to a lack of proper long-term memory, which ultimately leads to high error rates and poor practice results. This paper proposes a system to assist in the practice of Guzheng fingering. By constructing three corresponding student types and feedback implementation scenarios to provide different types of augmented feedback, the system aims to better support beginners in practicing Guzheng fingering on their own. The system employs gesture recognition technology to support the feedback intervention, and positive results were obtained through comparative experiments in which the system’s recognition and judgement functions could be used.

Using kitchen life as an entry point and the theory of mental modelling, we carried out a study on the needs analysis of a smart kitchen diet and social service system, aiming to meet the new needs of the elderly in terms of health and social interaction. Through questionnaires and user interviews, we collected and analyzed the mental data of the elderly and created a mental model of “diet and social interaction” as well as user requirements. The Analytic Hierarchy Process was used to identify the importance of dietary and social needs, covering the four demand directions of diet and nutrition, health management, social interaction, and health awareness. This study highlights the potential of user-centred research methodology in the health and social care of older people and provides useful guidance and insights for the design of future smart kitchens and related products.