An elixir will live forever and must be refined with real lead. -from seven words of Don Lv Yan.
A good worker exercises for several years and casts a sword named Longquan. -from Zhen's Gu Jian.
When Dante is boiled into mercury, lead is refined in the furnace. -from Don Lv Yan's Five Words.
5. Old friends are like real gold. -from Tang Guanxiu's Nine Ancient Meanings.