In this video, Mrs. Sun talked with two international students of Beijing University of technology about the fate between Beijing and the two Olympic Games. As a "dual Olympic city", what changes have taken place in Beijing from 2008 to 2022 ? what challenges have it encountered in bidding for and preparing for the Winter Olympic Games? What efforts has China made to meet these challenges? How did Beijing practice the concept of sustainable development in the preparation of the Winter Olympic Games? What major and profound changes have taken place in Beijing's urban development due to the Winter Olympics, and what benefits have the Winter Olympics brought to people's lives? Let's follow Mrs. Sun and two students to learn about it!