(It's inconvenient for me to type in Chinese since I depend on 平板手寫.)
Newton's gravitation and Einstein's field both enter the scene as perceptions. Their quantifications come later, and in Einstein's case, with great struggles.
To be fair, Newton's gravitation appears deceptively natural since it refers to people's daily experiences. So it is easier to overlook its metaphysical quality. Einstein's equivalence principle (gravitation is equivalent to space-time geometry) turns out a lot harder to perceive. Many very intelligent physicists wondered why they didn't develop general relativity themselves. The answer: you don't have Einstein's perception.
