The second lesson “Basic Tree Knowledge - Importance of Trees in Ecosystems and Biodiversity Lesson and Shiu-Ying Hu Herbarium Field Trip” under ECF Learning Tree Diversity Programme and Tree Conservation Youth Ambassador Training Workshop was successfully organized by Horticulture and Landscape Management Programme on 10 March 2018 (Saturday) with more than 20 secondary students attended and visited the Shiu-Ying Hu Herbarium in The Chinese University of Hong Kong.  In the visit, Ms Joyce Siu, the representative of the Herbarium, introduced the basic concept of plant documentation and the history of Professor Hu. Throughout this activity, THEi new campus and the programme of Horticulture and Landscape Management were also promoted.