By Hua-Ching Ni. 5.5"x 8.5", 250 pg, paperback. A collection of classes offered by Master Ni. It contains topics of interest for the spiritual student aspiring to reach genuine achievement through Internal Alchemy. It also provides the method to discover the unity of life. The term was derived from external alchemy, developed in China by "scholars of formulas" who were active with "external"and "internal" alchemy from 722 BC to 419 AD.