So the relative positions of the intrinsic reference points remain unchanged.
Assuming an intrinsic reference point spontaneously generates a static object from nothing, analyzing its force and motion conditions, keeping it always stationary.
Then the force it experiences and the acceleration correspond to a balanced cancellation.
As for the second example mentioned by Xu Yun, it's actually an astronomical concept known as the "drag effect," which belongs to the frontier theory of spacetime curvature.
Indeed, in later generations.
It was a super-long experiment lasting 48 years that delivered the final blow to Little Niu's bucket theory.
This experiment was called Gravity Probe B.
Its core purpose was to precisely measure the geodetic drift and inertial frame dragging near the Earth to quantitatively test the General Theory of Relativity.
