On 23 February 2016, a talk concerning global climatic change and the role of China in 2015 United Nations Climate Change Conference was organized by Our Hong Kong Foundation in Asia Society Hong Kong Center. Our teachers and S.4 students were invited to attend the talk. It is so delightful that a special guest, Mr. Xie Zhenhua (解振華先生) has been the lead negotiator for the People's Republic of China in United Nations Climate Change Conferences. Hewas invited to share his experience in international negotiations and the efforts paid by China to deal with global climatic change.