The ten gods aren't ten stars, they're the ten relationships between your day master and everything else on the chart. The derivation is mechanical: compare the day master's element with the other's (it feeds me, I feed it, it controls me, I control it, same as me), then check whether the polarity matches. Five relations split by yin and yang gives ten. So a ten god never says what you have; it says what your relationship to it is.
比肩 is same element, same polarity — the one exactly like you. Its image is someone shoulder to shoulder: a sibling, a colleague, a competitor in the same trade. The advantage of sameness is that understanding needs no explanation. The cost is that you want the same things.
So 比肩 arrives two-faced: another pair of hands, and another mouth at the same plate. The tradition's line — a weak day master welcomes it, a strong one doesn't — isn't mysticism, it's resource arithmetic. When you're short, someone helps; when you're not, someone competes.
