https://pokemon.fandom.com/wiki/Pok%C3%A9mon_Gold_and_Silver_Versions_cut_content
A Jiangshi is a Chinese vampire, basically. They're reanimated corpses, but rigor mortis has set in and they're so stiff they have to hop around to move, holding their arms outstretched. The paper talisman affixed to their head are either (ineffective) magical seals, or essentially the address of the deceased's proper burial ground, which the body is attempting to return to. It depends on the myth, of course.