What do numbers mean in China culture?

In China's ancient thoughts, 3 is the cardinal number and 9 is the extreme number. In addition to 5 and 3 and 9, 12 also played an important role in ancient culture. In our life, besides the five elements, five flavors, five zang-organs and five colors, there are many things related to 12, such as 12 Zodiac and 65438. In addition, the mahjong rules stipulate that each person draws 13 cards, and 13 times 4 equals 52, which coincides with the rule that there are 52 weeks in a year. Reflect the existing form of matter, and numbers represent the quantity of matter.