(2) Mosquitoes are pictophonetic characters with "worms" beside them, indicating that they are related to animals. It says "Wen", but the pronunciation is the same, which has nothing to do with the meaning of animals.
Box, pictophonetic characters, with "dish" next to it, indicating that it is related to utensils. It says "He", but the pronunciation is the same, regardless of the meaning of the vessel.