The 9 books of Blessing Before Birth are classified by the nature of their content. The conversations are between a baby in the womb and its mother. There are 50 units in each book, which add up to 450 conversations in the 9 books.
The energy pattern created by all the units put together is that of a downward pointing triangle. It represents the feminine energy of the universe. 50 units arranged as 10 chapters. A cumulative result of the energy patterns of all the 9 books together, with the 4 upward pointing [Shiva] and the 5 downward pointing [Shakthi] triangles, forms the core of the Sri Yantra.
Each unit is connected to other units all the books, forming the energy radiating from the intersection points of the Sri Yantra. Such intersections include triple intersections called marmas which activate our nervous system and related points of the physical body.
72 chapters are each structures of energy that harmonise with the 72 classifications of Nadis that make up our Nadi Network.