Some flights are strict, but not all food can't be boarded. Chocolate biscuits and the like are basically fine.

Domestic flights also bring a variety of hot pot bottom materials (must be checked).

International flights are relatively strict, and many foods that can be checked on domestic flights will become "neither boarding nor checking" on international flights, especially in countries with strict customs like Britain ... Several food types that cannot be taken on international flights are mainly: egg products, dairy products, meat products, fruits, etc.