People inevitably leave traces, and events inevitably leave marks.
In Tai Yin's eyes, nothing can escape from leaving a trace.
Even the Formation Dao itself, to him, is just a modification of the traces of the heavens and the earth—this is certainly a reverse argument, as it is well known that the Formation Dao is to perform the Heavenly Dao through the Human Dao, a cultivator's way of drawing and utilizing the power of heaven and earth.
If Tai Yin were to publicly express such an idea, the retro and conservative Tai Clan would be the first to not tolerate him, so he always kept it to himself.
Azure Dragon takes "Faith", Vermilion takes "Virtue", Black Tortoise takes "Benevolence", White Tiger takes "Slaughter". These four words are the four words of his Tao Path, considered moderate and standard within the framework set by the sages.
In the past, Uncle Tai Hua also followed this path, ultimately achieving True Man status, revitalizing the prestige of the Tai Clan.