In the second case, according to the new definition of infinity, its extension cannot be close to infinity, so it must stay in a finite state. Therefore, we can say that infinity is a finite infinity, that is, the unreachable quantity is the infinite quantity of the reached quantity, in which the decimal point makes no sense in comparisons of finite quantities and infinite quantities because transformation from finite quantities to infinite quantities must go through a jump process. Thus, when the infinite value of π is obtained, the meaning of its decimal point has been lost, and the number becomes an infinite integer value, which is also the final destination of all other mathematical quantities because transformation from finite quantities to infinite quantities is indicated by the change in direction, which means that the space we see is one quantitative continuum that cannot be established by the operations of addition, subtraction, multiplication, and division. This change in direction can be referred to as a quantity that can never be reached by extending it forever and can't be talked about anything outside of it: it is therefore an infinite quantity of finity.