Tree management; Hong Kong Rugby Sevens
b'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...'