What gets compared
Most compatibility readings pick one tradition and stop there. This one runs several in parallel from the two birth dates you enter: how the Five Elements of each chart interact — whether they generate and feed each other or control and drain — how the two animal years relate, and how the Western signs make contact. Reading them side by side is the point, because traditions disagree, and where they disagree is usually where the interesting part of a relationship lives.
What you enter and what you get
Two birth dates, and birth times if you have them. What comes back is not a single percentage but a set of readings by area: temperament, how the two of you handle conflict, the rhythm of daily life together, and where each of you naturally gives and takes. Where one tradition reads a pairing as easy and another reads it as demanding, the reading says so rather than averaging the two into a meaningless number.
How to read the result
Treat a hard contact as information, not a warning. Charts that complement each other in the elements are usually read as bringing out one another's best, but easy contacts also make it possible to drift, and demanding ones often produce the couples who actually talk. The most useful lines in any compatibility reading are the ones that name a difference in style — how fast each person forgives, how each one asks for space — because those are the differences you can actually do something about once they have a name.
Questions people ask
You can read this for friendships, family and working relationships as well as romance; the element logic does not care which kind of bond it is. If one of you does not know a birth time, the reading still runs on the date alone. And no reading here decides anything for you: historically gunghap was taken seriously when marriages were arranged, but read well today it works as a conversation opener — a way for two people to name and laugh at their differences rather than litigate them.