Organized by the Alumni Affairs and Development Office (AADO) and supported by the Campus Sustainability Office, some PolyU alumni reunited in a Green Campus Tour on 18 May 2018 and had a surprising and inspiring journey on sustainability. The day started when Mr. Joseph Chan, Head, Campus Sustainability, greeted the participants and elaborated on the sustainability and environmental advances PolyU has made. They were introduced to a number of the University’s significant sustainability-related achievements, research projects, activities and online platforms. They also enjoyed an interesting exploration into campus greenery and visited the recent upcycled urban farming site at the VA Terrace.