The huge broken leg will at the entrance of the United Nations Headquarters symbolizes the casualties caused by the war, especially the landmine explosion, and warns people to make every effort to prevent the war. Individuals are not allowed to visit here. They have to queue at the door and then form a group of 20 people to be guided by a tour guide. The six working languages of the United Nations are English, French, Spanish, Chinese, Russian and Arabic. At the door I saw a welcome in Chinese. Our tour guide is German. My tour is from all over the world, so I use English as a tour guide. He said he would speak five and a half of the six working languages of the United Nations, half of which were Chinese, but he could chat with me fluently in Chinese, and I could imagine how good his other five languages would be. Originally an hour of visiting time, because you asked a lot of questions, it turned into an hour and a half, and got a lot of information about how the United Nations has worked tirelessly for decades for world peace. It 's a rewarding trip.