The public art work titled “Guarding Angels” delivers people’s gratitude and appreciation to firefighters of the Fire Bureau of Taichung City Government, Lishan Branch as well as volunteer firefighters and Phoenix volunteers. By means of the process of public art installation, this work integrates living textures surrounding Lishan, delivers aesthetics, and raises people’s disaster-prevention awareness to achieve an operating philosophy of “sustainable business and arriving at supreme goodness” that helps establish a complete fire safety and maintenance system in Heping District.