1. Hot meals are meals provided to passengers by civil aviation aircraft during the voyage, that is, lunch.

2. Dry ordering refers to an airplane meal that mainly provides dry snacks such as cupcakes, baked steamed buns, peanut cakes, bread, zongzi and moon cakes for passengers on the plane.

To sum up, the main difference between hot meals and dry meals of Sichuan Airlines is that hot meals are passengers' lunches, while dry meals are airplane meals mainly based on dry snacks.