Balasubramanian Narayanaswamy, widely known in the astrological community by his pen name yenbeeyes, is a distinguished researcher and author. Initiated into the divine science of astrology at the age of 21 by his maternal grandfather, he has cultivated a lifelong passion for the subject. Since his retirement in 2001, he has dedicated himself fully to rigorous research and the translation of rare astrological texts.

At 77, he boasts an impressive bibliography that bridges classical wisdom with practical application. His published works include Matching of Charts (Parts 1 & 2), Importance of Lagna, Chandra Kavyam, and a collection of Jyotish Research Articles. His most significant contribution, however, lies in his monumental work on the Nadi system, comprising 12 volumes of the Surya Khandam and 10 volumes of the Chandra Khandam. This book marks the 11th volume in the Chandra Khandam series, continuing his legacy of making complex Nadi insights accessible to the modern world.