Can I check in kitchen knives on international flights?

Yes, as long as it's not a controlled knife, kitchen knives are fine.

The day after tomorrow, how many things to eat depends on whether you can enter the United States. Raw things are sometimes forbidden, such as mung beans.

No.

In accordance with the Civil Aviation Safety Inspection Rules of the People's Republic of China

Appendix 1: Prohibited Items to be Carried or Checked in by Passengers

Items that are prohibited from being carried on board or checked in include:

1) Firearms, military or police equipment (including major parts), (2) explosives, 3) controlled knives, 4) flammable and explosive materials, 5) poisonous materials, 6) corrosive materials, 7) radioactive materials, 8) other items that endanger flight safety, such as strong magnetizers that may interfere with the normal operation of various instruments on the aircraft, items with strong irritating odors, etc.

9) Other items prohibited from being carried or transported as provided by national laws and regulations.

Yes.

Mung beans and sesame paste, if not much, is not a big problem.