- Service BasisWhat Does Saju Compatibility Look At?It clarifies four items and their respective weights, and explains why those four are chosen. It also addresses why calculations can be made even without knowing the birth time.
- Relationship TableTwelve Earthly Branches — Combination, Clash, DiscordThis is a relationship table used for both day branch compatibility and zodiac compatibility. It fully discloses what each combination, clash, and discord means and their respective scores.
- ZodiacWhy does zodiac compatibility consider the year branch?The zodiac is the earthly branch of the year of birth. This explains why it is derived from the saju year pillar rather than the calendar year, and clarifies the significance of zodiac compatibility.
- Ten GodsTen Gods and Spouse PositionWe look at what each person's day stem is to each other through the Ten Gods. We explain why direct wealth and indirect wealth are read differently even though both are wealth.
- The five elementsSupporting Element — The energy needed nowWe view the five elements not as 'did they choose two' but as 'does the counterpart have what I need'. We also disclose the boundary value that distinguishes a strong day master from a weak one.
- TimeConvert birth time to true solar timeStandard time and the actual position of the sun differ. The time must be corrected based on the longitude of the birthplace to address why the time pillar is accurate.
- Our standardsInyeon’s Match — The reason for not providing a total scoreWe only take one person's data while leaving the opponent's position empty and substitute all possible values into that position. We explain the reason for not attaching a total score to the type obtained in this way.
- Personal InformationMethod of not storing entered informationThis explains what it technically means that your birth date is not recorded anywhere and what is included in the result link.
- Paid ProductsWhat is included in the paid report?This explains what has been added to the PDF while keeping the screen unchanged, item by item. Values and contents are read from the actual product settings.

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Calculation Basis
What is the Basis for Calculation?
Inyeon-Link reveals all the rules it uses. You can check the items and their weights, the scores from the earthly branch relationship table, and the threshold values that distinguish between a strong day master and a weak day master — you can see where the numbers on the screen come from.