The Campus Sustainability Office staged the PolyU Campus Sustainability Weeks (CSW) annually since 2013 and has established it as the epic sustainability event on campus. Various exhibition and activities were featured. This year’s event stunned the campus as the Office worked with a lot of NGOs such as WWF Hong Kong, Green Ladies from St. James’ Settlement, Hong Kong Dolphin Conservation Society, and Hong Kong Society of Herpetology Foundation, etc. to run countless sharing sessions and workshops for students and staff. There were other interesting programs like the Comic Dialogue Contest and the Finding Trees@PolyU game which attracted over 400 students and staff members to participate. Last but not least, campus cafes also offered their support and made the ‘BYO Friday buy-one-get-one-free’ activity sweep over the campus to motivate the BYO habit.