This weekly report from an engineering student group describes their progress on a multi-function air purifier project. The group aims to design a machine that purifies air and provides relaxation. They are working to combine four operating modes into a single circuit. The engineering team is extracting data from memory cards to understand device functions and applications, such as MP3 modules and power amplifiers. Their strong point is combining all operating modes, while their weakness is communication within the group. Next steps are to finish integrating all functions onto a printed circuit board.