1.The three disciples prepare medicine at night. The main ingredients are croton seeds, rhubarb and “frost on the flowers” (soot scraped from a cooking pot), which they blend with “dragons piss”. The medicine is to be swallowed with “dragon’s saliva”. Thus they manage to heal the king’s ailment.
師弟兄三人夜間修合藥物——以巴豆、大黃、百草霜（鍋煙灰）爲主藥配以“龍溺”再用“龍涎”爲引，治癒了國王沈病。