The “Educational Talk Series” launched by the Centre for Macau Studies (CMS) of the University of Macau has successfully held the fourth lecture at Escola Tong Sin Tong on March 13, 2023. The guest speaker of this lecture is Dr. Danny Leong Chi Man, who is an Adjunct Lecturer of the Center. The topic of the current Educational Talk is “Using insect diversity to build a health assessment of Macao’s terrestrial ecosystem”. During the lecture, Dr. Leong introduced the value of insects to the ecosystem, the discovery of the tiny ants in Macao, and the ecological projects carried out in the Greater Bay Area to the secondary students of the school. In addition, Dr. Leong also shared his experience of becoming an entomologist in Macao, as well as his adventure stories of conducting insect research around the world. The school principal, teachers and students agreed that the lecture was very inspiring, especially Dr. Leong, who broke through difficulties through his own perseverance and finally became an entomologist. More than 100 teachers and students from the school attended the talk.