In October of the golden autumn in the post-epidemic era, with the strong support of the Yizheng Municipal Government and the Foreign Affairs Office of the Yangzhou Municipal Government, the 2021 Yangzhou World Horticultural Expo and First Canal Cities Model United Nations Conference  were successfully held. The Window of Philadelphia organized a professional team of current United Nations personnel, officials of international organizations, and teachers of prestigious model united nations at home and abroad to set up the operation conference of the secretariat of the Model United Nations. The conference invited United Nations officials, the Ministry of Education leader, the Ministry of Foreign Affairs leader, and local government officials to participate. The Governor of Pennsylvania sent a congratulatory message to witness the successful holding of the conference. Special guest-Mr. Xu Haoliang, Assistant Secretary-General of the United Nations, sent a video from the United Nations Headquarters in New York to congratulate the student representatives on their outstanding performance; Mr. Xu Yongji, Deputy Director of the Department of International Exchanges, Ministry of Education of China, delivered a speech to the conference; Mr. Yang Zerui, Director of the Research Office of the China National Committee for Pacific Economic Cooperation, gave the participants a vivid current affairs course. On this multi-level international platform, more than 1,000 students from more than 100 schools across the country have undergone preliminary selection and training. In the end, nearly 300 students stood out and became the official representatives of the conference. At the venue, they expressed their opinions on various popular international issues, performed well, and completed a qualitative leap in quality training. Dozens of mainstream media in China, such as the Central Radio and Television Corporation, Xinhua Net, and China News Network, reported on the event.