How to connect the positive and negative terminals of a voltage regulator diode

Many friends have doubts about the positive and negative connections of voltage regulators, as some directions are opposite to the normal direction.

We all know that voltage regulators work in the reverse breakdown state, so in general, the positive and negative terminals of voltage regulators are reversed.

And the voltage regulator diode applies a high voltage to the negative terminal through a current limiting resistor, and connects a low voltage or ground to the positive terminal, so the output is a positive voltage.