Because this bird-like creature gained a leg in the course of history, it would fall into category one. At the mention of the toad, many people recall the story of Liu Hai, a student whose master was known for his miserliness and love of money.
古代奇人劉海，本名操，原是一名進士，後來拜呂洞賓為師，也成了仙。傳說劉海在學道的過程，曾遇一位守財奴的師父，這位師父有回因貪汙被貶，且罰入井中，化為三足蟾蜍。