How to understand Buddhism's "origin of sexual emptiness, origin of sexual emptiness"

The origin is empty, and the origin is empty. Origin means karma. For example, a person wants to eat rice, which is the reason, so he takes out rice, pot, water and salt and makes a fire to cook rice. This meal was originally not served, but it was only because of this idea (reason) and various cooking conditions (fate) that it was cooked (result) It is conceivable that in the wild, it is impossible to cook without rice pot, fire and water. It can be seen that rice only appeared because of fate. With the change of karma, for example, if this person wants to eat (because) he eats rice (fruit) with bowls and chopsticks (conditions), and the rice is gone. It can be seen that rice will only appear when the karma is sufficient. As soon as the karma changes, it disappears and changes. Born because of karma, died because of karma, not the original, so its essence is empty. Born by fate, its nature is empty.