Noodles can be eaten in an insulated lunch box at noon, but they will become lumps.

Tuotuo means that the noodles will become a lump when cooked for a long time, because the starch inside the noodles will be sticky after cooking, and they will stick together if they are fished out without any treatment, so they will be lump by lump.

Noodles are the most important staple food in people's daily life, especially northerners. If you don't eat it right away, the best way is to cook it and put it in cold water so that it won't stick together.