To enhance students’ understanding of the development of the Guangdong-Hong Kong-Macao Greater Bay Area, two S4 students joined the STEM Study Tour to the Greater Bay Area organized by the Yuen Long District Office on 18th - 20th December 2019. In this trip, they visited the Shenzhen Reform and Opening-up Exhibition Hall, Xbot Park and Guangdong-Hong Kong-Macao 3D Printing Innovation Hub, etc. in order to learn more about the high technology industry in the Guangdong area. The trip inspired students to think how Hong Kong can benefit from the development in the Greater Bay Area. Students learnt a lot and enjoyed the trip very much.