Allow me to side track the topic a bit.
In Chinese astrology, we also have something similar like Profection (transit) but our system is more fixed and is already in a pattern which is very easy to trace it down very much like remembering mathematical formulas.
Because Chinese astrology/eight characters and other Chinese occult arts are only available or I should say impossible to understand without deep understand of the 5 elements, Yin/Yang, combination of the skies and roots and also you must learn Chinese language for the word itself has it own symbolic meanings.
There are 10 different "skies", two for each elements starting from Wood, Fire, Earth, Metal and Water. Each element contains one Yin and one Yang symbol. There are 12 roots (animal signs), as most people aware of.
Each root again has one each Yin and Yang, however in different orders 1 water Yang, 2 Earth Yin, 3 Wood Yang and so on the last one is 12 Water Yin.
Go deeper, each root again contains another 1 to 3 elements, randomly, depending on the root.
Combining both skies and roots, there are 60 variations. A person's birth time, Year can have 60 variations, same as Month, Day, Time and even in minutes which is not well know how to calculate. Therefore, 60*60*60*60. Moreover, there is another combination of sky and root before birth at the time when a woman conceive which is also be used in a more in depth reading. In Chinese occult science, destiny is in fact determined at the time of conception. Both the time when a woman conceive and birth time of a person reflecting each other in a way which practice is no longer widely understood.
It is in theory, the energy of the universe at the time life began as an embryo and the energy of the actual first breath occurred at childbirth.
Depending on the season the native was born, energy of each element is different and then it will again influence the interpretation of each of the combination of 60*60*60*60, as well as day or night (early morning, midday, night or all in between to determine rather you are high in Yang or Yin energy).
On top of all these, location of your birth: East (Wood), West (Metal), North (Water), South (Fire) of course also including the Eastern-North, Western-south etc. Then the birth time of your parents are used to see the interaction with you in term of how your parent strength or weaken you. After all you are the copy of both your parents.
In term of transit of year, 10 skies and 12 roots (animal signs) again formed another 60 variations, they rotate one by one each year. We say that is external factor and the energy/element of each year, month, day, time strength you or weaken you. As a whole, good fortunate is relaying on good balance, extremely strength of one or few of the elements always represent misfortune in some areas. Each individual also has it own transit internal determined at the time of conception.
Oh.... I can go on and on about this. My conclusion is that I want to know how The Profection system actually works comparing to the Chinese system that I am familiar with. However, I am amazed both Western and Chinese astrology & Eight characters reflect to each other like mirror and give the same interpretations. For example, using Chinese Eight Characters my birth time is in extreme imbalance with dominant Yin water elements which is the same with Scorpio Stellium in a bundle pattern. Out of the eight characters, I have 6 Yin water, 1 Yin Wood and 1 Yin Earth (in here I don't mention about the elements under each root). Because of such extreme imbalance, my relationship with both of my parents is impossible to be harmonic because my sole strength is so strong that I don't rely on anyone to strength me. Therefore, I also don't need to rely on both man or woman but solely strong enough to take over life in my own way......which is very Mars-like factor.
When the power of water became so strong, I am being described as the Water of the Sea it can destroy everything but then again the lives within the Sea is abundance.
So....I am curious to understand how Profection system again reflecting the same interpretation to the Chinese system.