Extended data:
Qianxiahammer, scientific name: Fan Xiao smallpox, is an erect semi-shrub herb with an altitude of1m. Branchlets are stellate tomentose. Leaves alternate; Petiole length 1-4cm, covered with gray-white stellate hairs; Stipules linear, ca. 2 mm long, caducous; The lower leaves of the stem are nearly round, 4-5 cm long and 5-6 cm wide, the apex is shallowly 3-lobed, the base is round or nearly heart-shaped, and the edge is serrated.
Growing environment: in dry and hot open space, grass slope or sparse forest; Born on grassy slopes, mountain thickets and roadsides at an altitude of 500-1500m.
Distribution: Provinces south of the Yangtze River. Distributed in Vietnam, Cambodia, Laos, Thailand, Myanmar, India and Japan.