Characteristic 16. Regardless of how modern mathematics develops, it is impossible to calculate exact values (infinite values) with existing calculus because calculus calculations are approximate. More importantly, its calculation is based on infinitely dividing the length or high-dimensional curve manifold to be calculated into infinitesimal parts, which cannot be realized in axiom 3. Because axiom 3 implies that the infinitesimal part does not exist, the space we see is one quantitative continuum after the change of the direction representing the accumulation of infinitely finite quantities, and this one quantitative continuum cannot be divided into smaller or larger parts. Therefore, any length or high-dimensional manifold we see in daily life does not have practical significance. In other words, they are all one quantitative continuum, so we obtain their infinite exact values in axiom 3.