Showroom introduction: The aircraft is 21.3 meters long, has a wingspan of 31.7 meters, is 7.8 meters high, weighs 12,300 kilograms, has a ceiling of 6,500 meters, and a maximum range of 3,200 kilometers. From 1957 to the mid-1960s, Premier Zhou continued to fly on this aircraft and visited many domestic cities, as well as neighboring countries such as Vietnam and North Korea. Due to the need for confidentiality, this aircraft has two numbers, 678 and 600, used interchangeably. In 1958, when Premier Zhou took this plane back to Beijing from Harbin, it landed in Tianjin on the way.