Tree management; Hong Kong Rugby Sevens
8:30am-9:00am: tree management \n\n8:30am-9:00am: Ken So, chief executive, Conservancy Association\xa0\n\n8:30am-9:00am: Jim Chi-yung, Research Chair Professor of Geography & Environmental Sci-ence, Education University of Hong Kong\xa0\n\n9:00am-9:30am: Hong Kong...