Good afternoon, everyone. I am glad I have the chance to come to your prestigious school to give a talk about saving energy. I will start by giving you an outline of my talk. First of all, you will hear about how to save electricity. Second, I will talk a bit about how to save water. Finally, how to recycle so it is really beneficial to our environment. OK. If you have any questions, please do not hesitate to interrupt me anytime during the talk.