I want know why getStaticProps don't work , and I know should return props but in this matter the getStaticProps is not working with fetch or not

Question

can any one explain why getStaticPros don't work with me in Nextjs 13.4

import react from 'react';
import { NextPage } from "next";
function page()  {
    return (
        <div>Hello</div>
    );
}
export default page;

export async function getStaticProps () {
    console.log("getStaticPros");
}