Ten categories of Hebei's single strokes include: A (civil construction, resources, environment and safety, water conservancy, etc. (transportation, energy, power and materials, etc. ), c (equipment manufacturing, etc. ), d (agriculture, forestry, animal husbandry and fishery, textile, biochemistry, food, medicine and food, etc. ), e (public management and service, tourism, public security and justice, etc. ) and F.