病毒科

• 疒(illness; patient in bed)RADICAL
• 丙(third heavenly stem)PHONETIC

A person lying on a sickbed crying out in pain everywhere sounds like "bing."

• 母(mother; origin)RADICAL
• 龶(toxic grass; harmful plant)ASSOCIATIVE

A toxic plant grows from the earth like a mother nurturing life, but carries deadly poison.

• 禾(rice plant)RADICAL
• 斗(threshing floor; rice threshing area)ASSOCIATIVE

To classify rice grain by measuring each type with a measuring vessel.