Today, 44 years ago, on July 17, 1981 (Lunar Calendar, June 16, 1981), the U.S. Hotel Canal collapsed and 111 people were killed. Kansas City people were undergoing massive cleaning work. On the evening of July 17, 1981, three concrete and two metal hanging channels on the fourth floor of the Hyatt Regiment Hotel in Kansas City suddenly collapsed, causing a tragedy. According to recent statistics, 111 people were killed and most of the 188 injured were still rescued in the hospital. At 7:00 p.m., 1,200 to 1,500 people were dancing in the hallway and hallway, and the 4th floor channels suddenly broke from the ceiling hanging steel, and the entire passage fell like a large piece of cake to the top of the 2nd floor. This was when the two