Child-Cinnabar

Place the elixir of the ninth cycle in a Divine Tripod (shending) and expose it to the sun after the summer solstice. When the tripod becomes hot, add one pound of Vermilion Child zhu er, cinnabar) beneath the lid and then retire, watching and waiting that the essence of the sun shines upon it. 

Real Powder is a secret name of cinnabar. In the Liquid Pearl, 1.4b, the ingredient of this elixir is called Vermilion Child zhu er), an abbreviated form of Vermilion Child Who Descends on the Mound (jiangling zhu er), which the Shiyao erya (Synonymic Dictionary of the Materia Medica ... 

---