When the practitioners are at Qigong state, they can make the tablets flee out of the sealed better. By the efficacy of Qigong while the glass is not broken and the tablets are not deformed. As for this 'Fly' affect, we will account for the rationality of this phenomenon emphatically through the high-dimensional space and provide a theoretic basis for the feasibility of the phenomenon.
First of all, introduce the general knowledge of the n-dimensional space: the straight_intersected coordinate system of the n-dimensional space; the coordinate of point; the distance of two point and the equations of the n-dimensional space line, the spherical surface and the ellipsoid surface.
The second, there comes the definition of the closed curved surface. If the boundary of Region D intersects the line which links up a point inside Region D and an another point outside, Region D is called a closed region, otherwise it will be called an open region. The boundary of the closed region is called the closed boundary. In the three-or-more-dimensional space, the boundary of Region D is called the closed curved surface. The closed boundary of the two-dimensional is called the closed curved line.
The third step is stressed on demonstrating the theorems. The spherical surface is a closed curved surface in the n-dimensional space, but it is an open curved surface in the n-plus-one-dimensional space.
Similarly demonstrated that the ellipsoid surface is a closed curved surface in the n-dimensional space, but it is an open curved surface in n+one-dimensional space.
That bears out that the closed curved surface is an open curved surface in the four-dimensional space

X*X + Y*Y = 4
V: Z = 1
Z = 3

Now there are some tablets. Suppose that they are in the sealed bottle v as just mentioned above. A practitioner has sent his skill, the efficacy is the force of the four-dimensional space. Under the effect of the force, the tablets in the bottle move in the four-dimensional space. Since the closed curved surface V in the three-dimensional space is an open curved surface in the four-dimensional space, the moving track of the tablets can get out of the bottle without passing the curved surface. Using a high-speed pickup camera, a photographer takes such a picture: a tablet that half of it is inside and the other half is outside the bottle. Does the tablet pass through the glass? The phenomenon can be accounted for as follows. The high-speed pickup camera is placed in the three-dimensional space. It can only take the effect in the three-dimensional space. To the pubIic's view, the tablet seems to pass bottle according to the photograph taken by the pickup camera which shows that the tablet is half-inside and half outside. In fact, that is not the real track of the tablet. The moving track of the tablet taken by the pickup camera is the moving track in the four-dimensional space projected on the three-dimensional space.
As in the two-dimensional space(plane), there is a circumference. If a point A inside the circle moves outside of the circle to the position of B(Illustration), the track of Q must intersect the boundary of the circle. If A moves in the three-dimensional space, it must not pass through the boundary getting to the position of B.(plate 5). If 'a pickup camera' of the two-dimensional space is used to take the picture of the move from A to B, it can only bring out the point C which is the point of the intersection of line AB and the circumference. However, line ACB is only the projection of the curved line AMB of the three-dimensional space on the two-dimensional space.
As the above-mentioned, the practitioners can deliver the tablets and of the sealed bottle when they are at Qigong state. The phenomenon also proves the existence of the force of the four-or-more-dimensional space. The point is whether such a practitioner's efficacy is the force of the four-dimensional space or of five-or-six-dimensional space or son or. This problem requires a further step to research.

The mathematical account for the phenomenon of fly? in qigong