Lee Woo Sing College has been committed to green life and energy saving. Last Christmas, the College made good use of wasted materials, such as used cans, cartons and old magazines, to build a 'green Christmas tree'. A paddle generator was installed inside the deer sleigh for converting kinetic energy to electrical energy. The electricity generated powered up the Christmas lights, a small fan, speakers to play Christmas music, and served to charge up mobile phones or tablets. It was hoped this little artwork could help to raise awareness on energy efficiency and green living.