Between any two points in the coordinate system, there exists a curve called a "twisted connection line," which ensures that every point along the curve reflects some degree of distortion within the coordinate system.
The mathematical expression is: for any two points (P_1) and (P_2), there exists a parametric curve (\vec{r}(s)), where (s) is the arc length parameter, satisfying: [\vec{r}(0)= P_1,\quad \vec{r}(L)= P_2], and for every point on the curve (\vec{r}(s)), there is a scalar value (T(s)) related to the degree of distortion, such that: [ T(0)= 0,\quad T(L)= 1].
Yang Xuanqing could barely understand this part.
It represents not just the curve's geometric connection, but also the evolution of the degree of distortion within the coordinate system.
