Ninety-nine is a special number, which is usually used for naming, numbering and indexing in various fields. For example, the Japanese police station is named after the number of 99 administrative districts; For example, in China, Highway 99 is the number of an important highway, indicating its rank and status. In addition, the familiar mathematical knowledge in 99 multiplication table is also beneficial to cultivate students' knowledge and practical application ability in the field of mathematics.
In the cultural sense, the number ninety-nine has infinite meaning. In Japan, because the homonym of "ninety-nine" is the same as that of "disillusionment", ninety-nine has a special meaning in Japanese culture, which means health, longevity and happiness. In addition, in some religious and spiritual traditions, ninety-nine also has a special position, and is often used to count the number of prayers for chanting, praying for peace and wishing happiness. In a word, the number ninety-nine has different meanings and applications in various fields, and it is a number full of profound meanings and mystery.