Among ancient Chinese monuments Russian researcher Andrey Davydov discovered the Catalog of human population. The title of this ancient source is Shan Hai Jing (translated from Chinese as the Catalog of Mountains and Seas). Official science still does not know for certain the dating of Shan Hai Jing and the author of this text. However, in this source A. Davydov found very detailed descriptions of psychophysiological structure of 293 subtypes of the biological type Homo sapiens. Thus, the answer to the question "What is human psyche and what is its structure?" was found.

"The Catalog of human population is a description of a human as a type by subtype structures. Subtype structure (“psyche”, “soul”) is a combination of individual archetypes, recorded at the genetic level (principle). Expressions and interaction of subtype structures in manipulation modes and phenological algorithms are described with adjustments for gender, age and cultural differences. Information is recorded on six factors." This definition was developed by Andrey Davydov—the author of discovery and decryption of the Catalog of human population.

Despite that this scientific discovery was made back in the 80s of the XX century, was verified in scientific institutions in Russia, has a wide range of practical applications, and for the past 20 years is being used in daily lives of those who known about it—unfortunately, it shared the fate of many scientific discoveries, which do not fit into traditional scientific concepts. And, as is known, if something is contrary to an existing paradigm, then it gets rejected as pseudoscience, quackery, flawed experience or simply a figment of imagination. For this reason, the scientific community still prefers to remain silent about the Catalog of human population, even though some very eminent academics (not only Russian) have long known about A. Davydov’s discovery.

The matter was complicated by that for almost a decade a group of officers of the Foreign Intelligence Service of the Federal Security Service of the Russian Federation led by Colonel Andrey Dmitrievich Polonchuk persecuted and tried to physically destroy A. Davydov and his colleague in research—psychologist Olga Skorbatyuk. As a result, they suffered extensive damage to their health, had to leave their homeland and flee to the USA where they were granted political asylum. However, this story is described in detail in another book of the Catalog Of Human Souls series titled Shan Hai Jing—A Book Covered In Blood, while this book is devoted to some of the scientific monographs, presentations made at scientific conferences and scientific articles.

This is certainly a very small amount of materials compared to the volume of research carried out between 1974 and 2014 by the author of the scientific discovery of the Catalog human population A. Davydov and his colleagues at the Special Scientific Info-Analytical Laboratory—Catalog Of Human Souls. The reasons for this are wide field for research, strenuous work schedule, and, of course, value priorities.

For some time now, we prefer to present results of our scientific research not in scientific articles, but in popular science books, intended for a wide audience. In our view, this is quite logical, as it makes more sense to take the time to tell about the Catalog of human population to those, who are actively using it on practice, instead of those, who prefer ephemeral values such as scientific degrees, awards and authority in the world of science instead of knowledge and benefits, which this knowledge provides. We hope that our colleagues will understand and forgive us for this.