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VCN was a novel broad concept of numbers that created by YE Qiu-Sun in 1995. FCN is only some special circumstances of the VCN. Todays, in International Mathematics and Computer Science, the basic reasons of puzzled realm in which numbers have been deeply studied and developed at a standstill are, all researches on numbers only confined to a same computation rule of the FCN, we call it FCR. But the computation rule of the VCN may be artificially designed in a great difference & intelligence very much, we call it VCR. This paper points out that, the application of VCN for n-figures is wider than that of FCN for n-figures, and it gives out three applied examples of practice.