In the early days of flight service in the United States, the plane meal was usually cold fried chicken. In 1936, United Airlines began to add a kitchen on the plane, which can make hot drinks and prepare sandwiches. Later, heated ovens and intelligent steam ovens appeared, which ensured that hot food was eaten on the plane. In China, the airplane meal started from the combination of white eggs and bread. In addition, there are some "special" snacks, such as chewing gum, white rabbit milk candy, local specialties (such as Beijing Roast Duck), and white spirits such as Moutai, which have also appeared on some flights... After entering the new century, with the increase of catering companies, the variety of airplane meals in China has become increasingly rich. Nowadays, most airlines have special meals (religious meals, children's meals, fruit meals, etc.). Eligible first-class and business class passengers can also order meals on the airline's official website and enjoy personalized customization. Of course, ordinary passengers can also book (limited types), both of which need to be booked in advance.